AR Parts in 5.56x45mm NATO

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

Luth-AR Charging Handle AR-15/ M16 5.56x45mm NATO/ .223 6.75in Length Steel QPQ Black

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

Howe Barrel 5.56 14.7 Fluted Mid Gas Stainless 1-8

JE Machine Tech Standoff Muzzle Brake w/ Crush Washer .223/5.56 Caliber Black

JE Machine Tech M-Lok Free Float Slant Cut Quad Rail Handguard 7in No Anti-Rotation Tabs Black

Stag Arms Upper Receiver Assembly Kit Right Hand

Stag Arms AR-15 Bolt Carrier Group Left Hand 5.56x45mm NATO Nitride Black

Stag Arms AR-15 Stag 15 Bolt Carrier Group 5.56MM/.223/.300BLK/.350 Legend Right Hand Non-Marked Nitride

Seekins Precision AR15 .223/5.56 11.5" 1:8" 1/2"x28 Threaded SS M4 Barrel 0010120065-F

TacFire AR-15 Carbine-Length Gas .223 / 5.56 1:8 Nitride Barrel - 16"

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 8" 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 Bolt Carrier Group 5.56x45mm NATO Nickel Boron

KAK AR15 BCG M16 556 K-SPEC NP3 DE

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

K-Spec 5.56x45mm Nato Complete Upper Receiver - K-Spec 5.56 Nato 16'''' Bbl 1-7 Twist Complete Upper Black

KAK AR-15 Upper Receiver Completion Kit Forward Assist/Ejection Port Cover

ZRODelta M16 Mil-Spec Bolt Carrier Group 5.56/223/300BLK Nitride 9310 Bolt w/ Billet Extractor Black Small

ZRODelta M16 Mil-Spec Bolt Carrier Group 5.56/223/300BLK Nitride 9310 Bolt w/ MIM Extractor Black Small

ZRODelta M16 Enhanced Bolt Carrier Group 5.56/223/300BLK Nitride C158 Bolt w/ Billet Extractor Black Small