In addition to a Mil-Spec hard coat anodizing, the lower receiver features an integral trigger guard and an adjustable tensioning post to eliminate any unwanted movement between the upper and lower receivers. Chase & Clean Threads For More Accurate Installation. Buy quality and let the manufacturer worry about how it gets made. Solid, accurate and dependable. The same pros and cons apply. Taper pinning means that the barrel and front sight base are drilled on the bottom to match The front sight is secured by wedging steel pins through the sight and grooves. I knew about the hardness for chrome lining, but not the softness of nitriding. MSRP: $564.95. AR15 Lower Receiver Blueprint PDF DOWNLOAD. “The AR-15 upper receiver assembly is considered a part, and may be purchased and mail-ordered in most locations. And I’m here with the homework: I choosed Noveske Infidel 4 https://noveske.com/products/gen-4-13-7-rifle Really badass and expensive rifle. People also love these ideas. SAA 16" 5.56 M4 1:7 YHM-5000 Smooth Forearm, FlipFront-Sight Complete AR-15 Upper Receiver This does NOT mean that your rifle will fire fully automatic. It’s one of the reasons good nitriding facilities certify to barrel manufacturers that the process happened at certain temperatures. If you want to know more about barrels, I highly suggest checking out my article on AR-15 barrels. It’s not really heat treatment, but barrels do need to be stress relieved after rifling (except for cut-rifled models). The upper receiver assembly contains all of the essential parts of the rifle including the barrel, bolt carrier and firing pin, among others. In this price bracket, you really can’t go wrong with any of your options whether they are Noveske, KAC, Hodge, or one of the other top-end brands. This strengthens the aluminum alloy considerably. There are a lot of great rifles and barrels out there, and the subtle differences between them are often purely academic. Melonite (also called salt bath nitride, QPQ, and other names) is a surface conversion/hardening process that provides good corrosion resistance without the loss in accuracy of chrome. The alternative to forging is billet, where a solid block of aluminum goes into a CNC machine. AR15 STRIPPED UPPERS. Atlantic Firearms offers a wide variety of AR15 rifles and AR15 Upper receivers. When Rob_S put out the original “chart” in the late 2000s, it became the de-facto standard for shopping around. Sign up to receive promotional emails roughly once a month. As far as the barrel for the Noveske goes, they mention elsewhere on their site that they are made with the same material as M249 machine gun barrels. 1.250"-18 tpi - Corrects out of spec or cross-threaded upper receivers and barrel nuts.1-3/16"-16 tpi - Makes receiver extension (recoil buffer) tube and lower receiver threads uniform for easier installation. The most important part to consider when building any AR15 rifle is the complete upper receiver. 14 AR Lower Receiver Step-by-Step Chapter 3 Location: Pick up the surface just indicated (butt face) with an edge finder and then the face of the forging that is against the angle plate (deck). Companies quickly caught on and started marketing their wares while making sure to hit the key points. I’ve indulged a little with the “just tell me what to get” crowd regarding a few things here or there. The F-Marked and taper pinned front sight base is another indicator of quality. The standard AR-15 rifle uses a 20-inch (510 mm) barrel. 4150 reflects better hardness and heat characteristics over the slightly cheaper 4140 blend, but the average shooter is not likely to push a barrel to the types of temperatures that would seriously cause problems. While using a jam nut on an AR15 muzzle brake, should this be pinned in some way other than just torqued down? This site and its community are a labor of love. He's a lifelong learner, passionate outdoorsman, and steadfast supporter of firearms culture. If you are looking for a complete upper or a complete parts kit, we have the options you need. Daniel Watters’s history of the 5.56 cartridge hosted at Loose Rounds mentions the takedown and pivot pin holes rusting through in as little as three months. We offer our exclusive Lifetime Warranty on all products manufactured by Radical Firearms as long as you own the product! I have also seen another manufacturer of very high-quality rifles, KAC, state that they no longer do these tests out of concerns that the test actually shortens the life of the component. The Truck Gun Light features a Mil-Spec M4 forged upper receiver and a LSA Billet lower receiver. As I know they aren’t available here in Czech Republic or middle Europe. Drilling AR-15 Lower Receiver Dimensions. I don’t see commercial extensions very often anymore, and I think the industry has more or less settled on the “mil-spec” tube. I know in knives… Read more », https://www.everydaymarksman.co/equipment/nitrided-barrel. I’ll be brief here and hit the highlights. When shopping for stripped AR-15 upper receivers, the billet option is prevalent throughout the market. This includes the bolt carrier gas key, two screws staked twice each, and the castle nut of a carbine buffer tube. Not many manufacturers specify their buffer tube materials. Barrel – unfortunately I can’t identify the materials, but there are two options, stainless and chrome lined CHR. I don’t have any reliable data on whether or not the receiver extension material makes much difference, but all the benefits of 7075 still apply as far as strength and corrosion. The barrel bore and chamber is chrome lined. Order online or give us a call at 570-368-3920! 3.3.3 Upper receiver qroup. I had just a few chances to touch Noveske rifles and never fired one. Daniel Watters’s history of the 5.56 cartridge, The Enemy of Good Enough: Advocating for the MCC, Vortex Strike Eagle 5-25×56: The Raw Truth Review, Tips for Adding an Assault Pack to Your Loadout, On the Cheap: 22LR as an Awesome Long-Range Training Tool, Choosing the Best Concealed Carry Belt for You, Project Gungnir: My First Precision Bolt Gun, Go Shoot the Gun: A Defense of the Mighty .308, Manganese Phosphate Barrel Finish on entire barrel, USGI M16A4 Government Profile Barrels with, Un-notched Hammer compatible with 9mm use, Independently Certified Mil-Spec 11595E Barrel Steel 20″ USGI M16A4 Government Profile Barrel, HPT (High-Pressure Test, per Milspec) Barrel, MPI (Magnetic Particle Inspected, per Milspec) Barrel, Manganese Phosphate Barrel Finish on Entire Barrel. Our kits come with everything your build needs, with the exception of the lower receiver. Yet others might not do it at all. Also includes the AR10 INCOG 2 muzzle brake with Sound Director can. BCM, for example, goes out of their way to have their barrel steel certified to the spec. + Newsletter+ New Content Alerts+ Deals and Sales. At this moment, we are not taking new customer orders. The resulting shaped hunk of metal then passes through a machining process where all of the cavities and holes are created. You can see the difference below. $57.00 $64.00 AR-10 Upper Assembly - 20in / .308 Win / 1:10 … Also, there’s three different nitriding processes available but only two are in mass use these days due to the caustic nature of the by products produced of the third. You should only consider them for lightweight operation in competition rifles- and even those styles (like the JP LMOS) are much better designed. Let’s talk about feed ramps. The AR upper receiver is what holds all the parts that determine weight, accuracy, and general performance of the completed weapon. In the early 1990s, there were noted issues with the M4 Carbine’s ability to consistently feed on fully automatic. At least, that’s what the lore says. For us regular Joes, which one we use doesn’t really matter. AR15 STRIPPED UPPERS. Because I used an A4 rifle in this example, the dimensions of the receiver extension aren’t mentioned. Microsoft Bing. The bolt is made from Carpenter-158 tool steel. That’s the heart of the difference. Our lower receivers are made with high quality materials and come in a variety of configurations to fit you perfectly. I’d probably go with the chrome, but on rifle of this price it maybe make… Read more », Hi there, David, I’m happy to help dig into Noveske’s specs a bit. Although, both shorter 16-inch (410 mm) carbine barrels and longer 24-inch (610 mm) target barrels are also available. That tells me that they’re using FNH as their hammer-forge source and they use a 4150CMV blend often called 41V45. I don’t have the resources to… Read more », So I did so more reading on the subject and if a barrel would be heat treated, and they’re not to my knowledge (only work hardened mechanically) they can nitride at a lower heat than the last temper heat…which I would imagine would be in the 700-900 degrees F range. For the widest selection of complete upper receivers with a tight fit and no wobble, check out the options available from Right to Bear Arms and Supply. It leaves the entire upper receiver accessible to work on sight systems or clean the bore. For that reason, most people look for a 5.56 NATO chamber in their AR-15. There are two downsides to taper pinning, though. Armalite Upper Receivers are available at EuroOptic.com! I could go on and grab some ads from other web sites for comparison, but I want to leave that up to you. Keep in mind that nearly all rear sights made today are designed to work with F-marked front sight bases. This bolt has also undergone HPT and MPI testing, as with the barrel. The AR15 Rifle modular design allows you to easily switch out the upper and change calibers or configurations. RTB is now offering our own line of .22LR parts and accessories. There are various hybrid chambers out there, like .223 Wylde, that can comfortably shoot both. Fortis Billet Upper Receiver. The reality is that NATO measures the pressure of ammunition differently than SAAMI does. If you want to swap to a new gas block, I suggest shaving down the FSB rather than trying to refit a different one in its place. The intent is to make sure that the part will not fail you prematurely. That increases costs, but proves a known quality. That is why a lot of match rifles have clamp-on gas blocks. This ultimate guide doesn’t include steps for building a lower receiver; if that’s what you need, check out our guide to choosing an AR-15 lower. High-pressure testing (HPT) and magnetic particle inspection (MPI) mean that the manufacturer fired a high pressure “proof load” through the barrel, then used a process to look for imperfections and weaknesses that may lead to later failure. You can choose from mil-spec upper receivers which are forged uppers. The BDR-15-3G was the first skeletonized AR-15 that I had ever shot. The difference is very small, likely about an ounce, so it’s not worth making a buying decision over weight differences. That’s where quality control standards come in, and that’s a difficult thing to market. It gets even harder when they’ve already made up their minds about what they want and they’re really only looking you to validate it. The AUTO refers more to the weight and dimensions. Two popular models are the Aero Precision with forward assist & ejection port door and the BCM M4 with laser T-marks. This blend is well understood, having been originally spec’d in 1966. We use only the most trusted contractors to precision manufacture our .22LR barrels, bolt and magazines. The lighter commercial AR-15/semi auto carriers can negatively affect reliability. These solid and dependable uppers give you a great foundation for your AR15 build. Just about everyone should focus on 7075 for their AR-15 specification. Looking for a top quality Upper Receiver at wholesale prices? The upper receiver assembly contains all of the essential parts of the rifle including the barrel, bolt carrier and firing pin, among others. This is a desirable feature for enthusiasts, who can purchase a number of upper receivers (often in different calibers and barrel lengths) and interchange them with the same lower receiver.” AR-15 Stripped Upper Receiver – No Forward Assist, No Dust Cover (0) $49.99 On sale: $46.99 Sale. AR15/AR10 .308 General Information He's former military officer turned professional tech sector trainer. Staking is the process of indenting fastening screws in certain key areas to prevent the fastener from backing out. Billet will usually be slightly heavier to make up for the lack of compressed metal grain. A crush wafer, which is what most flash hiders use, does not require any additional work once torqued down. We are currently performing some scheduled maintenance. In addition, we have billet upper, M4 flat-top upper, AR15 striped upper or Spikes upper. AR-15 Uppers Palmetto State Armory offers a great selection of AR-15 barreled upper assemblies. To ensure you have the best experience possible, this website uses cookies. Match with one of our AR15 lower receivers for a solid fit. Side Charging AR-9 Stripped Billet Upper with LRBHO (0) $245.95 On sale: $235.99 Sale. This rifle has a 5.56 NATO chamber. In this configuration, the tip of the bullet gets stuck under the lip. No testing and no YouTube to profess from the mountain top the merits of this and that…until it happened. AR Complete Upper Receivers. A tool steel extractor simply means that the extractor is better than soft pot metal. The AR15 Assembled Upper Receiver comes with the port door and forward assist installed. 3.3.2.13 Receiver extension. Let’s start with the foundation: the receivers. I made the A2 style AR15 model, and Tom tom_eriksson@hotmail.com made the A1 style AR15 as well as the 1911 model. AR uppers help you customize a rifle for any application whether it is military or civilian. Again, this is the contracted military specification, but that doesn’t mean it’s necessarily the “best” option. The other common alternative, 6061 aluminum, was the original specification in the early 1960s since it’s easier to machine and extrude. AR-15 carbine receiver extensions should be 1.14″ in diameter, also known as “mil-spec” in the advertising world. AR-15 carbine receiver extensions should be 1.14″ in diameter, also known as “mil-spec” in the advertising world. You cannot simply remove the base and put another one in its place. AR-10 LR308 Upper Receiver DPMS Low Profile (0) $134.99 On sale: $109.99 I have seen one manufacturer state that the value of MPI is greatly diminished without doing the HPT first, so keep that in mind when you see only one or the other. Matt is the primary author and owner of The Everyday Marksman. I have a very similar barrel from another… Read more ». Aero Precision Stripped Upper Receiver: We picked the stripped receiver, which doesn’t have the forward assist and ejection port cover… Lucky Gunner did a great study in 2012 looking at the truth to all of this. And exotic too. If you don’t have one, then you will have to adjust the front sight pin high enough that the base of the pin may become exposed. Don't fight with the wrong size from the home improvement store, use this one instead. It’s a good barrel. The opposite is the “commercial spec.”. The only thing I can offer to this article is that chrome lining tends to be HRC 73 (Rockwell Hardness C-scale) and nitride tends to produce a surface hardness of 70-71. Out of Stock. I prefer nitride myself due to the lower cost and availability, however if I was doing any full auto or extreme rate of fire stuff, hammer forged & chrome lined is indeed the way… Read more », Hey Mark! In many cases, such as with less expensive rifles, the manufacturer may say the receivers are 7075-T6, but the buffer tube may be 6061 in order save some money. First, any removal of material from the barrel in such a non-uniform way could result in changing the harmonic vibration of the barrel during firing, which means decreased accuracy. Thank you for coming by The Everyday Marksman. The information here would have melted the servers in 2000. Midwest Industries AR-15 10.5" 5.56 Carbine Length Upper Receiver w/ M-LOK Handguard (No BCG or Charging Handle) This item is currently on order. 7075 is more than 50% stronger in comparison. An AR-15 billet upper receiver is considered the gold standard for top of the line custom builds. I’m not entirely sure how low of a heat you can go to soften work hardened steel. An F-Marked base means that the shelf of the front sight is the correct height for detachable carry handles. The more important part here is the better springs and inserts, which provide a stronger “grab” on the base of the brass for positive ejection. The military spec for barrel steel is a 4150 Chrome Moly Vanadium (CMV) alloy, specifically known as Mil-B-11595E. If you go with a jam nut system, or elect to use no washer, I would probably use a little bit of Rocksett on the threads. AR-15,M4,M16 Buffer Tube Identification; AR-15,M4,M16 Mil Spec Buffer Tube Dimensions; AR-15,M4,M16 Commercial Buffer Tube Dimensions; When choosing a receiver extension tube to build a rifle there is little difference as long as you buy the same type. I hope you stick around for a while, and maybe even join us. Featuring M4 feed ramps, this upper receiver can be used with multiple calibers on the AR-15 platform. In this post, I want to dig into the technical specs you should look for when shopping around. The finish of an AR-15 billet upper receiver is going to be cleaner and have sharper details than its forged AR-15 upper receiver rival. The Radical Firearms 16" SOCOM Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! The files below are complete solid models of the AR15/M16 and the 1911 firearms. It involves heating, quenching, and heating again. I’ve shot a lot of high dollar AR-15s including LaRue (another Texas company), JP Enterprises and Wilson Combat. The actual threads that attach to the lower are the same on both extension tubes. For the price of a box of ammo, you can help keep the lights on and the content flowing. RTB 9mm / 22LR True Slick Side Upper Receiver, War Dog Industries WRC-15 Advanced Lightweight Receiver Set, Spikes Tactical - Forged M4 Flat Top Upper (Multi Cal), Spike's Tactical Billet Upper- Gen II (Mil Spec Barrel Nut), Nickel Teflon Upper Receiver (M4 Flat Top) - Complete ***BLEM***, WMD Guns NIB-X Nickel Boron upper receiver, BCM M4 Upper Receiver Assembly (w/ Laser T-Markings), Anderson AR-15 Upper Receiver Lightweight Upper - SLICK SIDE, Aero Precision Assembled AR-15 Upper Receiver with Port Door and Forward Assist, Stripped AR-15 Upper Receiver - FDE Cerakote (light belm), Spike's Tactical Stripped Lower / Upper Set - Spider Logo – Black, Spike's Tactical Stripped Lower / Upper Set - Spider Logo – FDE, Aero Precision Assembled AR-15 Upper No Forward Assist - *Slick Side*, Aero Precision AR-15 (Stripped) Upper No Forward Assist - Slick Side, Yankee Hill Flat Top Upper Receiver, Stripped, Battle Arms BAD556-LW Lightweight 7075-T6 Billet Receiver Set, M4 Flat Top Upper Receiver – Stripped (Raw), Assembled M4 Upper Receiver with Port Door and Forward Assist - T marks, Anderson Anodized M4 Upper Receiver - Stripped, Aero Precision Stripped AR-15 Upper Receiver, Aero Precision Stripped XL Upper .458 SOCOM / 450 Bushmaster / Big Bore, New Frontier C-9 Pistol Caliber Raw Billet Upper w/ LRBHO, Aero Precision Stripped Upper / Gen 2 Lower Set - Tungsten Cerakote, Stripped AR-15 Upper Receiver - White Cerakote, Aero Precision M4E1 Threaded Assembled Upper Receiver - Anodized Black, Aero Precision Assembled XL Upper .458 SOCOM / 450 Bushmaster / Big Bore, Aero Precision Stripped AR-15 Upper Receiver - Tungsten Cerakote, Stripped AR-15 Upper Receiver - Magpul OD Green, Aero Precision Stripped AR-15 Upper Receiver - Blem, Aero Precision M4E1 Threaded Assembled Upper Receiver - Blem, 9mm / 22LR Slick Side Upper Receiver Mod 2 - Blem, LEFT HANDED Assembled M4 Upper Receiver with Port Door and Forward Assist, War Dog Industries WRC-15 Advanced Lightweight Upper Receiver, Stripped AR-15 Upper Receiver - Burnt Bronze Cerakote (Blem), Anderson Stripped .458 SOCOM Upper Receiver. If you’re new, I want to help you better interpret what it is you’re reading. I’ll have to dig into that a bit more and add it to the nitriding article. Please check back soon. M16-AR15 Upper Receiver Block. Machined to mil-spec dimensions, their lowers work with standard AR15 components and ensure the highest quality and parts interchangeability. Chases and cleans the two most important threads on the AR-15/M16 receivers. This is the correct c-clip for use on M16 and AR15 dust cover rods. The Everyday Marksman is primarily funded by readers like you. Some manufacturers, like BCM, do this on every bolt and barrel they sell. Check back soon! We'd love to hear your thoughts, leave a comment. Experience in Vietnam showed that forgings of 6061 were extremely prone to corrosion in humid environments. Grip this handy block in a bench vice and hold the upper receiver by the lugs or by the receiver rail. The 17 Design & Manufacturing AR15 Stripped Lower Receiver is the perfect base for your AR15 build. Parts for this build include: 1. The first AR build is geared toward competitive shooting. Gain insights from pros, new content notifications, vendor discount alerts, and more! Marketing teams are very good at throwing up smoke screens to misdirect you. More information. The AR15/M16 rifle has become one of the most popular modern firearms on the market. The total package comes in at a weight of 7 lbs 12 oz. PARTS AND ACCESSORIES (Barrel Nuts, etc.). For instance, an A3 upper receiver is flat-topped to accept a range of scopes for hunters along with the A4 upper receiver they both use a gas block or a standard front sight. So here’s your project, go find an AR-15 from a company you like and post it in the comments. SLIDE PARTS - GUIDE RODS - STRIKERS, ETC. White Label Armory AR15 Dust Cover C Clip. Definitely out of my price range Let’s check it out. Billet receivers may have tighter tolerances, leading to a better fit of components and potentially better accuracy. Move to the location of the pivot pin (7.500X -.250Y) and zero your DRO. This is the advertisement for Bravo Company USA’s BCM A4 model. AR-15 Lower Receivers Start your AR-15 build with a stripped or fully assembled AR-15 lower receiver from Palmetto State Armory. Manufactured to milspec dimensions; This is the correct low profile c-clip for your AR. Again, this is the military standard, but you don’t need to follow it if you go for a different barrel material or lining type. Shop now. I’ve always had the mindset that teaching people how to do something was more productive in the long run than just doing it for them. This is one of those posts. This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. That means that the carrier is the same dimensions and weight as the original select fire design. This site uses Akismet to reduce spam. Always remember that government contracts typically go the cheapest path that meets their reliability needs. Thanks for that! The debates were furious and frequent. For more information, check out privacy page. If you're looking for a billet receiver, this is one of your … PLEASE READ THIS FIRST: Thank you for dropping by our website. A rifle-ramped barrel on a carbine-ramped upper leaves a distinct lip that will jam the rifle. The lower receiver extension shall be securely fastened to the lower receiver by means of the receiver end plate being staked to the receiver extension nut. The T6 in 7075-T6 refers to the type of heat treatment used on the aluminum. Both the upper and lower come from machined from forgings of 7075 aluminum. The upper receiver is a forged 7075-T6 A3 AR upper featuring M4 feedramp cuts with a hard coat anodized black finish for durability plus an AR15 Mil Spec MPI Tested Nitride 7.62x39 BCG with proper depth bolt head and phosphate extractor with a AR15 AMBI Charging Handle. Our AR15 Gen 2 Stripped Lower Receiver is the perfect base for your custom AR15 build. The BCM rifle above mentions M4 feed ramps on both the barrel and the upper receiver. The long term effects of heating the barrel in such a manner are not well understood. The computerized machine “sculpts” the block into a final design. The receiver shall not rotate from its correct position with the release lever in the 6 o’clock position on the vertical centerline. Your question about 41410 and 4150 regarding throat erosion is a good one, though. That said, you need to pay attention to the combination of rifle and carbine ramps between the barrel and receiver. Let’s compare what that company says about their product against the expected standards. Some budget brand ARs have the FSB pinned, but it will be crooked, and there is no fixing it once the pin holes are drilled. Your options are rifle-to-rifle, carbine-to-carbine, or carbine-barrel to rifle-receiver. Before I get going here, I want to emphasize that just because a company lists the right spec on their sales copy, there is still a lot of room for things to go wrong. Another very helpful article for me. Price: $189.95. This is the most secure way to attach a front sight or gas block. Learn how your comment data is processed. We will be back as soon as possible. Home » Equipment » AR-15 Technical Details: How to Read the Spec Sheet. One of the hardest things with writing about guns, and AR-15s especially, is that a lot of people just want to be told what to buy. I’m going to review common AR-15 specs and explain what they mean. he bolt carrier is typically 8620 steel, though this isn’t listed above. Fits all standard AR15 / M16 style ejection port cover rods The RTBA brand brings you the only lightweight .22LR pencil barrel on the market at an affordable price! Lewis Machine and Tool (LMT) wrote that Aermet is better steel for bolts, as it is 2.5 times stronger, but it’s also quite a bit more expensive and wasn’t available when the original specs came about. Forging may produce a slightly stronger receiver due to the compression of metal grain, similar to the slightly increased strength of hammer forged barrels. Visit our 22/rimfire category today and take advantage of our lightning fast shipping! I always thought it was a little pithy, but it wasn’t wrong. Other manufacturers might do it on a few barrels from each batch. Nearly everything is using M4 Ramps, including most of the civilian market. Simply push the 2 lower pins out and install the new upper and you are ready to rock & roll! To start this off, let’s look at a quality example. The bolt should be shot peened, which increases the resistance of the bolt to fatigue. All Right to Bear rimfire products are compatible with CMMG 22 conversion kits and other rimfire components. To date, the M16A2 and A4 rifles in the inventory still use the rifle ramp configuration. What you need to know is that a 5.56 rifle can fire 5.56 or .223, but the same is not true in reverse. It’s just so easy to get wrapped up in marketing hype and then not know what is important and what is fluff. Where every non essential part of the upper … However, be advised that it is a fairly new process, and the temperatures that the barrel must be heated to are pretty high. Hi Max, it really depends on the method. The most important part to consider when building any AR15 rifle is the complete upper receiver. Whether you are a gun enthusiast or a beginner, we have plenty of options from different barrel lengths, calibers, gas systems, handguards, & rails to choose from … The M-16 specification called for feed ramps only on the barrel extension alone. The NBS AR-15 Assembled Upper is machined by one of the foremost manufacturers of mil-spec AR- Due to overwhelming demand, we are experiencing a 8-10 business day delay in shipping standard …