5.56x45mm NATO Upper Receivers

Troy CQB-SPC Upper 5.56mm FDE

Troy A4 Complete Upper SUPG-A4S-10BT-00, 223 Rem/556NATO, 10.5 in Barrel SUPG-A4S-10BT-00

ADAMS ARMS P1 UPPER 5.56X45MM NATO 16" BBL MOE ADJ GAS PISTON MAGPUL MOE A2

Adams Arms FGAA01358 P1 Complete Piston Upper 5.56x45mm NATO 11.50 in Black Nitride Barrel, Aluminum Black Receiver, M4 Handguard for AR-Platform

Ar-15 Lightweight Upper Receiver W/ Slim Line Handguards - Ar-15 16'''' Lightweight Upper W/ 15'''' M-Lok Slh Rail

Ar-15 Lightweight Upper Receiver W/ Slim Line Handguards - Ar-15 16'''' Lightweight Upper W/ 12'''' M-Lok Slh Rail

Luth-AR M4 Government Profile Complete Upper 5.56 14.5 Threaded Barrel

Luth-AR 18 in Mark 12 kit minus Lower Receiver w/coll. Stock Black Carbine

Luth-AR 16 in Light Weight 1-7 kit minus Lower Receiver w/fixed stock M-Lok Black Rifle

Luth-AR 16 in Light Weight kit minus Lower Receiver w/fixed stock M-Lok Black Rifle

Luth-AR 11.5 in Light Weight Complete Upper Barrel Receiver Assembly - 5.56 1x7 twist K-Mod Free Float Handguard Black 11.5

Luth-AR A3 Complete Upper Receiver Assembled 16in Lightweight Barrel 5.56mm 1-7 Twist 1/2 x 28 Thread A2 Flash Hider w/ Key MOD Palm Handguard Black

Luth-AR Mark 12 Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 27in 18in Government Rifle 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR 11.5 in Lightweight Barrel Complete Upper Receiver BAA3-L11, 223 Rem/556NATO, Black Finish

Luth-AR Mark 12 Complete Upper Barrel Receiver Assembly 5.56 mm 27in 18in Government Rifle 1x9 1/2x28 PicatinnyKey MOD A2 Flash Hider Anodized

Stag Arms Upper Receiver Assembly Kit Right Hand

Seekins Precision DMR .223/5.56 18" Bbl Complete Upper Receiver 0011100107-F

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 8" Barrel

AR-STONER AR-15 Complete Upper Receiver 5.56x45mm NATO 18" Barrel

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 7.5" Barrel

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 11.5" Barrel

AR-STONER AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 10.5" Barrel

5.56x45 Nato Complete Upper Receiver - Kak Forged Complete Upper, 16" 5.56 Nato Mid Gas 13" Mlok