Due to financial problems, and limitations in terms of manpower and production capacity, ArmaLite sold the AR-15 design and the AR-15 trademark along with the ArmaLite AR-10 to Colt's Manufacturing Company in 1959. The WMD Guns NIBXUPPER02 stripped upper receiver features enhanced wear characteristics not only because it is machined from 7075-T6 aluminum forgings, but because it is finished in WMD's exclusive NiB-X coating. On the other hand, the black finish matches most modern lower receivers found on the market today. Overall a good rifle but many view the lack of a railed upper receiver as outdated. The other reason to get a "blemished" version of the assembled upper is the price tag, as you can purchase this upper for about three-fourths the price of a regular receiver. As you probably know, nickel boron plating is hard, tough, slick, and smooth, but a WMD new, improved NiB-X coating provides a hardness of 70 Rockwell that is harder than Tennifer, Melonite, or hard chrome plating and has a Coefficient of Friction (CoF) of .08, a tad more than Teflon. The M4 has a collapsible stock, while the standard AR-15 has a fixed stock–but collapsible stock configurations are widely available for the AR-15. If an item can be added to your cart, it is in stock. Dismiss. The WMD fully coated NiB-X AR-15 stripped upper receiver is an ideal building block for a long-lasting AR-15 due to its ultra-smooth and an exceptionally tough nickel boron coating. As for the configuration, you should note that upper receivers come as either stripped uppers, skeletonized uppers, barreled uppers, or complete assemblies. If you plan to pick a budget upper, you should note that they wonât come with the charging handles nor bolt carrier groups and may not have the most advanced handguards. If youâre balling on a budget and want to refinish your AR-15 rifle to period-correct contours of a Vietnam era rifle, the Brownells M16A1 blemished Upper Receiver finished with a matte gray or matte black hard anodized finish is a perfect match. Please read before purchasing. colt m4 Colt Parts for sale Colt Ar-15 At a Glance: Our Top Picks for M16a1 Upper Receivers. The military versions, the M-16 and M-4, have been the weapon of choice for the US military for more than 50 years, and for nearly that long, American gun enthusiasts have had an ever-growing love affair with the AR-15. As we said, the AR- pattern rifle is made up of two parts. Since it matches the features of the original M16A1 receiver, the upper comes with no shell deflector and does not have the M4 feed ramps found on most modern-production AR-15 flattop uppers. The WMD Guns AR-15/M16 NiB-X coated upper receiver is smooth as glass, but the takedown/pivot pin holes are too small, with tight tolerances that may require some filling or using a rubber mallet for installation. Pivot pin paint is too thick and the pivot pin holes are slightly too small. The other build was turning into a "1971-74" M16A1 and I found a Colt C MP B barrel on the EE for $500. There are also A3 variants with detachable carry handle or flattop receivers, also known as the "Slick-Sided" uppers. The upper receiver of the AR-15/M-16 family of firearms is always vital as it is the heart of your little black rifle. These are ideal for scoping your rifle, granting it immense roles and purposes. This guide will provide you with an overview of some of the best M16A1 upper receivers on the market. Due to anodizing issues, these receivers are rejected by quality control, but they meet all the requirements in terms of metal quality and specifications. On the flip side, whereas the stripped uppers are the cheapest, barreled uppers will carry a considerably higher price tag, though not quite as expensive as complete uppers. Gulp! The Aero Precision is one of them. The M16A1 is assembled of two parts, upper and lower receivers. The Aero AR-15 assembled upper receiver comes ready to assemble with the upper parts kit of your choice and ready to be installed onto any standard AR-15 lower. Though Aero claims that this part is made to mil-spec M16/M4 specifications, and will drop-in fit onto any mil-spec lower, some AR builders complain at loose construction with a lot of wobbles. The only thing I noticed is that the barrel extension has M4 feed ramps cut in it and of course the M16A1 style upper receiver does not have M4 feed ramps. Currently, accessories and parts for AR-style rifles seem to be available at affordable prices, but you should know what to look for in your quest for upgrading your existing black rifle or building a new M16A1. Save my name, email, and website in this browser for the next time I comment. Even cheap .223 55 grain stuff runs flawless. In stock items ship within one business day. Aero Precision AR-15 stripped A3 flat top upper features MIL-8625 type 3 hardcoat Class 2 anodized finish for excellent wear resistance. The prevailing trend of cloning military firearms is particularly mirrored in the "Retro Black Rifle" and building an M16A1 clone. Assembled with new production rear sight kit, tear drop forward assist, and dust cover. There is also the stripped upper receiver, which is just the solid piece of metal housing all the parts. The AR-15 is the civilian semi-automatic version of the select fire M4. They offer a whole series of stripped uppers without upper parts, enabling you to choose your own forward assist and port door. Colors vary greatly between upper receivers. In proportion with the shorter barrel, the M4 has a shorter gas tube and to compensate for the shorter gas tube, the M4 also has modified feed ramps. S.A.C price 750.00 CUSTOM ORDER ONLY S.A.C PRICE 750.00 TO 875.00 / 4 WEEK TURNAROUND. These uppers are marked âNDSâ which means they are a NoDak Spud forging. AR-15 Upper Receiver Parts.
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