AR Parts in 5.56x45mm NATO

Cryptic .233 / 5.56 / .300 AAC Blackout Master Repair Kit Mystic Black

Cryptic .233 / 5.56 / .300 AAC Blackout Bolt Repair Kit Manganese Phosphate

Ar-15 Barrels, Fluted, Stainless Steel, Rifle-Length - Ar-15 Barrel, 20'''', Fluted, Rifle-Length, Stainless Steel

Ar-15/M16 Hbar Rifle Barrels - 20'''' Hbar Rifle Barrel W/ Headspaced Bolt

Ar-15/M16 Hbar Rifle Barrels - 18'''' Hbar Rifle Barrel W/ Headspaced Bolt

Colt AR-15 Barrel 5.56x45mm NATO 14.5" SOCOM Contour 1:7" Twist Parkerized

Colt AR-15 Bolt Assembly 5.56x45mm NATO

Ar-15 Le6960-Ccu Upper Receiver 5.56 M-Lok - Le6960-Ccu Upper Receiver 5.56 M-Lok Black

Colt M4, M4A1 AR-15 Barrel 5.56x45mm NATO 14.5" Government Contour 1:7" Twist Matte with Low Profile Gas Block

Colt M4, M4A1 AR-15 Barrel 5.56x45mm NATO 14.5" Government Contour 1:7" Twist Matte

Colt M4CQB AR-15 Barrel 5.56x45mm NATO 10.3" Government Contour 1:7" Twist Parkerized

Colt LE6920 AR-15 Barrel 5.56x45mm NATO 16" Government Contour 1:7" Twist Parkerized

M4 Upper Receiver 5.56 Socom Barrel - M4 Socom Upper Group 14.5in Stripped

Colt M16 AR-15 Barrel 5.56x45mm NATO 20" Government Contour 1:7" Twist Parkerized

Colt LE6933 AR-15 Barrel 5.56x45mm NATO 11.5" Government Contour 1:7" Twist Matte

CMMG ARC 5.56mm to .22LR AR Conversion Kit (Police Trade-in)

Choate Tool Ar Essential Parts Kit 223 5.56

Centurion Arms CMR Long 1913 Rail - Flat Dark Earth

Centurion Arms Lightweight Hammer Forged 5.56 NATO AR-15 Barrel - 12.5"

Centurion Arms Lightweight Hammer Forged 5.56 Barrel - 11.5"

Centurion Arms CM4 5.56 Forged Upper Receiver

Centurion Arms AR-15 CMR M-LOK Handguard - 4.75"

Bushmaster XM15-E2S 223/5.56mm Police Trade-in Upper Receivers

Bushmaster XM-15 Complete 5.56x45mm Upper Receiver 16\" Barrel - 00-400003-BLK