AR Parts in 5.56x45mm NATO

Yankee Hill Machine Barrel Thread Protector Cap 1/2"-28 Standard Barrel Steel Black

Diamondback DB Barrel 5.56x45mm NATO 7 Pistol-Length

Diamondback AR-15 Barrel 5.56x45mm NATO 5.5" Heavy Contour Pistol-Length 1:8" Twist Black

Diamondback DB Barrel 5.56x45mm NATO 16 M4 Contour

Diamondback AR-15 Barrel 5.56x45mm NATO 16" Medium Contour Carbine Length 1:8" Twist Black

Diamondback AR-15 Barrel 5.56x45mm NATO 16" Heavy Contour 1:8" Twist Black No Muzzle Thread

Daniel Defense AR-15 Flash Hider 1/2"-28 Thread 5.56/223 Steel Matte

Aero Precision AR-15 Bolt Carrier Group 5.56x45mm NATO Nitride Black

Bravo Company BCM GUNFIGHTER Mod 7 Compensator 1/2"-28 Thread AR-15 Steel Black

Bravo Company BCM GUNFIGHTER Mod 6 Compensator 1/2"-28 Thread AR-15 Steel Black

Bravo Company M16 Bolt Carrier Group fits M16

Luth-AR A1 Stripped Upper Receiver With M4 Feed Ramp

KAK Industry Compensator 5.56 1/2x28

KAK Industry K-SPEC Enhanced Bolt Carrier Group AR-15

KAK Industry K-SPEC Enhanced Bolt Carrier Group Silver 5.56 / .223 Rem

TacFire AR-15 Stripped Upper Receiver 5.56 NATO / .223 Rem

AR-STONER T-Series Ambidextrous AR-15 Charging Handle Assembly

Wilson Combat Recon Match Grade Barrel AR-15 Stainless Steel 5.56 NATO 16 Barrel 1:8 Twist

Battle Arms Caliber Engraved AR-15 Ejection Port Cover 5.56 NATO Aluminum Black

Battle Arms Development Billet Upper Receiver Fits FORTIS REV II Rail

Strike Industries GridLok Full Duty 16 For HK 416/M27 IAR

LBE Unlimited AR-15 Firing Pin, Black - ARFPN

LBE Unlimited AR15 5.56NATO CRUSH WASHER

LBE Unlimited A2 Birdcage Flash Hider .308 Win 5/8x24