AR Parts in 5.56x45mm NATO

20" 5.56 Government Rifle Length AR 15 Barrel, Modern Series

12.5" 5.56 Government Profile Carbine Length AR 15 Barrel, Modern Series

11.5" 5.56 NATO Government Carbine Length, Classic Series

11.5" 5.56 Government Profile Carbine Length AR 15 Barrel, Modern Series

18" 5.56 SPR Rifle Length AR 15 Barrel w/ Ops 12, Modern Series

16" 5.56 Mid-Length HBAR Barrel, Modern Series

16" 5.56 Government Profile Midlength AR 15 Barrel, Modern Series

16" 5.56 M4 Carbine Length AR 15 Barrel, Modern Series (BLEM)

16" 5.56 M4 Carbine Length AR 15 Barrel, Modern Series

14.7" 5.56 Pencil Profile Midlength AR 15 Barrel, Modern Series

14.5" 5.56 Government Profile Midlength AR 15 Barrel, Modern Series

14.5" 5.56 M4 Carbine Length Chrome Lined AR 15 Barrel, Classic Series

14.5" 5.56 M4 Carbine Length AR 15 Barrel, Modern Series

10.5" 5.56 Government Profile Carbine Length AR 15 Barrel, Modern Series

8" 5.56 Pistol Length AR 15 Barrel, Modern Series

7.5" 5.56 Pistol Length AR 15 Barrel, Classic Series (Blem)

7.5" 5.56 Pistol Length AR 15 Barrel, Modern Series

M16A1 20" Chrome Lined Barrel

COLT M16A1 RIFLE PARTS KIT- VIETNAM STYLE VIDEO

AR 15 SILENT RECOIL SPRING

Sons of Liberty Gun Works Scalper 5.56/.223 Bolt Carrier Group

7.5" Stealth 5.56 NATO AR 15 Pistol Upper

APOC Armory Black Nitride Bolt Carrier Group 5.56/.223

Sons of Liberty Gun Works 14.7" Swampfox Complete Upper