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Rifle Supply AR-15 5.56 NATO Barreled Upper Receiver - 16"

Manufactured by Rifle Supply
Manufactured by Rifle Supply
3 Reviews
$317.99 $399.99

In Stock

Standard orders will ship out same day if ordered by 3:30pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Rifle Supply AR-15 Barreled Upper Receiver features a 16 inch barrel chambered in 5.56 NATO and an M-LOK free float handguard for light weight while having plenty of room for adding accessories. The 16" barrel features a medium profile, 1:7 twist rate, and a carbine length gas system for extreme reliability. Attached to the end of the barrel is an A2 flash hider and a the entire barrel features a Manganese Phosphate finish. Build your next AR-15 today with this barreled upper receiver from Rifle Supply.

  • Chambered in 5.56 NATO
  • 16" Barrel with 1:7 twist
  • 15" M-LOK free float handguard
  • A2 flash hider
  • Carbine length gas system
  • Mil-Spec flattop upper
  • No BCG or charging handle
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AssemblyBarreled Assemblies
Barrel CoatingManganese Phosphate
Barrel ContourMedium
Barrel Length16
BrandRifle Supply
Caliber Gauge5.56 NATO
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

Ratings & Reviews

3 reviews

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Top knot AR upper


It almost look like my SIG 516 upper. Well build with 4 QD slots for sling attachment, MLok all around the 15” free floating hand guard and the finish is beautiful.
<br>It is well worth more than $500 compare to what I paid at PA. What’s a bargain 👌

Excellent value, great product!


I bought this assembled upper on sale and can't be happier! I bought a set of Daniel defense sights and sighted it in at 100 yards. Was able to stack rounds eclipsing each other with PMC bronze .223 55 grain ammo. Also running a lightweight bolt. Great buy! If your on the fence don't hesitate.

Beautiful upper.

by -

Excellent quality and appearance for the money. Prompt and friendly customer assistance when I needed it too! Will definitely continue to shop at Primary Arms.