5.56x45mm NATO Barrels

7.5" 5.56 NATO 1:7 Stainless Steel Pistol Length Barrel

10.5" 5.56 Carbine Length w/ FSB AR15 Complete Upper (No Handguard)

13.9" 5.56 Government Profile Midlength AR 15 Barrel, Modern Series

13.7" 5.56 Government Profile Midlength AR 15 Barrel, Modern Series

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

16" 5.56 Pencil Profile Carbine AR 15 Barrel, Modern Series

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