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Colt LE6921CK LE6921 .223/5.56 NATO 14.5"
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Ballistic Advantage Performance Series AR-15 11.3" 5.56x45mm Carbine Length Hanson Barrel with Low Profile Gas Bloc
Noveske 7000102 Lo-Pro Gas Block Barrel .223/5.56 NATO 18" Stainless Steel
CBC Industries AR-15 Barrel - 16" Barrel - 5.56 NATO - Colt Competion Style - 110-210
Primary Weapons 2M114UA01-2F-NC MK114 Mod 2-M 223 Wylde 14.50" Anodized Barrel for AR-15
Primary Weapons M114UA01-2F-NC MK114 Mod 1-M Upper 223 Wylde 14.50" Anodized Barrel for AR-15
Noveske 7000055 Lo-Pro Gas Block Barrel .223/5.56 NATO 16" Stainless Steel
Bushmaster 92194 A3 AR-15 Complete Upper ORC Flattop 223 Rem/5.56 NATO 16" Black
Colt LE6920CK Upper Receiver Conversion Kit .223/5.56 NATO 16.1" Bl
Ballistic Advantage BABL556005M Modern Series .223/5.56 NATO 10.5" QPQ Corrosion Resistant
Daniel Defense 070770917301 .223/5.56 NATO 16" Heavy Phosphate
Daniel Defense 070771912501 .223/5.56 NATO 14.5" Heavy Phosphate