5.56 NATO
Barrel, 5.56 NATO
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24" 5.56 Nato 1:8 Barrel, Rifle Gas, Heavy ContourB2-K004-A012
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20" Front Sight Based Barrel (5.56)B2-K650-A004
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16" Barrel 5.56 M4, 1:8, Carbine Front Sight BaseB2-K650-A001
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16" 5.56 Nato 1:8 Barrel, Carbine Gas, M4 ContourB2-K004-AN08
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18" Barrel, 5.56 NATO, 1:8, Rifle, Comp ProfileB2-K004-AN13
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16" Barrel, 5.56 NATO, 1:8, Carbine, HBAR ContourB2-K004-AN17
