5.56x45mm NATO Upper Receivers

Sharps Bros. SBUR04 16" Complete AR 15 Upper

Spike's Tactical 16" Mid Length CHF Complete Upper

Troy Industries 16" 5.56 NATO A4 Complete Upper

Radical Firearms 16" 5.56 NATO Complete Upper Assembly

Luth-AR Assembled A3 AR 15 Upper Receiver

16" Patriot 5.56 NATO AR-15 Complete Upper

BattleHawk Armory AR-15 16 5.56mm, 15 MLOK Handguard, Pencil Profile, Black Complete Upper Receiver w/ BCG & CH

20" 5.56 Rifle Length w/ FSB AR15 Complete Upper (No Handguard)

16" 5.56 M4 Carbine Modern Series w/FSB AR15 Complete Upper (No Handguard)

11.5" 5.56 Carbine Length w/ FSB AR15 Complete Upper (No Handguard)

10.5" 5.56 Carbine Length w/ FSB AR15 Complete Upper (No Handguard)

Colt 10.3" CQB 5.56 Upper Receiver - MK18 Clone

Colt M16A1 Upper Receiver Assembly - Auction

Colt M16A1 653 Carbine Parts Kit - Auction

Colt M16A1 Upper Receiver Lot - Auction

Colt Clone M16A1 Upper Receiver Stripped

Colt IAR 5.56 Upper Receiver Assembly 11.5" Barrel

Dirty Bird 10.5 Government Carbine 5.56 M-LOK Upper Assembly - V3, OD Green

Wolf T91 AR15 Upper 14.5"

Wolf T91 AR15 Upper 12" SHORTY

Colt LE6940 5.56 Monolithic Upper Receiver Assembly - Police Trades

Wolf A1 AR15 Upper T91 16"

M16A1 C7 Assembled Upper Receiver w/ Brass Deflector

M16A1 C7 Stripped Upper Receiver w/ Brass Deflector - No Feedramps