Anderson Manufacturing AR-15 Complete Upper Receiver Kit 16" 5.56 NATO 1:8 M4 Profile - 15" Expo Arms M-LOK Rail

Manufactured by Anderson Manufacturing
3 Reviews


In Stock

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The Anderson Manufacturing complete upper receiver kit chambered in 5.56 NATO is a great start to building your custom AR-15. Built with proven components, this AR upper features a 15" Expo Arms M-LOK Rail. Offering an uninterrupted Picatinny top rail and M-LOK slots at the 3, 6, and 9-o’clock, this rail has plenty of space to mount your favorite optics and accessories. An added benefit of the Expo Arms free float handguard is a general increase in accuracy. The handguard is only connected at the chamber end of the barrel by a steel barrel nut and does not impart any pressure on the muzzle end. This prevents the barrel from being pushed slightly out of alignment resulting in missed shots down range. The 16” barrel in this upper receiver kit is made from 4150 chrome moly steel and features an M4 profile that helps to reduce weight while remaining strong. It also has a durable phosphate finish to protect it from corrosion, so you can depend on your rifle for years to come. Choose your sights, pin the assembly to your complete lower, and hit the range!

  • 16" 4150 chrome moly steel barrel with M4 contour and phosphate finish
  • Carbine length gas system 
  • Chambered in 5.56 NATO with a 1:8 twist rate
  • Phosphate M16 cut bolt carrier group
  • BCG magnetic particle inspected
  • Standard charging handle
  • 1/2x28 A2 flash hider
  • 15" Expo Arms M-LOK Rail
  • Non-RF85 treated
  • Made in Hebron, Kentucky

This AR-15 upper receiver kit from Anderson Manufacturing comes with all you need to finish your rifle build. Unlike most kits, it includes a completely assembled BCG that has been properly tested and magnetic particle inspected to ensure function in your rifle. Just like the barrel it is coated in manganese phosphate to protect it from rust and gives it an extremely hard surface that can withstand the wear that is expected from shooting. The forged upper receiver comes completely assembled with a Mil-Spec lower parts kit that includes forward assist, dust cover, and a charging handle. This upper receiver group will fit on any Mil-Spec lower designed to shoot 5.56 NATO ammunition, so you can quickly and easily build an affordable rifle for plinking at the range.

Anderson Manufacturing builds rifles, pistols, and parts utilizing the latest in computerized manufacturing. By keeping manufacturing in house, Anderson can offer quality, American-made products at an affordable price, backed by a limited lifetime warranty.


Barrel Length16
Barrel Material4150 Chrome Moly Steel
BrandAnderson Manufacturing
Caliber Gauge5.56 NATO
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceA2 Flash Hider
Twist Rate1:8

Ratings & Reviews

3 reviews

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In addition to my original review about 8 months ago, I've shot over 2k rounds through this upper with no issues at all! Incredibly accurate. Glad that I purchased this upper.

Great value


Bought this upper to complete a build I was in a hurry to finish. Overnight shipping was a success. Went home the next day and attached it right to my finished lower and everything lines up beautifully. Haven't had the chance to shoot yet but I have no doubt it will perform wonderfully.

Had Some Issues

by -

I got one of these at a really good price. I had an issue with the forend rail, it was too snug getting a Troy front sight on, like it was cut too big, so I exchanged it. The new one had the same issue so I just got over it and greased up the sight and rail and pushed it on. Additionally the BCG is the roughest looking that I've got now, for whatever that matters, tons of tool cut marks in and out. Shot fine though and it was really inexpensive when I bought it so I can't get too torqued about it's issues, but I've got lower bid uppers that gave me a better intial impression.