.223 / 5.56

Ballistic Advantage Modern Series 5.56 Government Barrel - 12.5"

Rainier Arms Select 5.56 NATO Barrel

Rainier Arms Mountain MOD2 5.56 NATO Barrel

Rainier Arms 5.56 NATO Barrel - 6.75" Satin (Contract Overrun)

Rainier Arms Select 5.56 NATO M16A1 Barrel - 20"

Ballistic Advantage Performance Series 5.56 Hanson Barrel - 13.7"

Ballistic Advantage Performance Series 5.56 Hanson Barrel - 12.3"

Andro Corp Industries AR-15 5.56mm QPQ Barrel - 8"

Nemo Arms 5.56 NATO Barrel - 7.5" (Contract Overrun)

Noveske Skinny Light Afghan 5.56MM Barrel - 14.5" FSB

Faxon Firearms Gunner AR-15 5.56 NATO Mid-Length 4150 QPQ Barrel

Spinta Precision MK18 5.56 NATO Nitride Barrel - 10.3"

Noveske CHF Chrome Lined Switchblock 5.56 NATO Barrel - 12.5" Leonidas

Daniel Defense Cold Hammer Forged 5.56 NATO Barrel

Sons Of Liberty Gun Works 5.56mm Combat V2 Barrel

Ballistic Advantage Performance Series 5.56 NATO Hanson Barrel - 10.3" w/ Lo Pro Gas Block

Noveske N4 Light 5.56MM Barrel - 16 LP

Noveske N4 Light 5.56MM Barrel - 14.5 FSB

Geissele Cold Hammer Forged AR15 5.56 Barrel

Ballistic Advantage Modern Series 5.56 Government Barrel - 13.7"

Ballistic Advantage Modern Series 5.56 Midlength Gov't Profile CMV Barrel - 16"

Ballistic Advantage Modern Series 5.56 NATO Barrel - 10.5"

Ballistic Advantage Modern Series 5.56 SPR Barrel - 18"

Ballistic Advantage Modern Series 5.56 Goverment Barrel - 20"

Ballistic Advantage Modern Series 5.56 NATO Government Profile Barrel - 11.5"

Noveske Leonidas CHF Chrome Lined 5.56 NATO FSB Barrel - 12.5"

Noveske CHF Chrome Lined Switchblock 5.56 NATO Barrel - 10.5"

Noveske Recon Stainless Lo-Pro Gas Block Barrel 5.56 - 16"

Noveske N4 Light 5.56MM Barrel - 10.5 LP

Noveske CHF Chrome Lined Lo-Pro Gas Block 5.56 NATO Barrel - 14.5"

Faxon 20" Gunner, 5.56 NATO, Rifle-Length, 4150 QPQ

Faxon Firearms AR-15 5.56 NATO Pencil Barrel QPQ