PSA 16″ M4 CARBINE 5.56 NATO 1:7 NITRIDE 13.5″ M-LOK FREEDOM UPPER
Barrel: 4150V Chrome moly VANADIUM steel, 16″ barrel length chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. The M4 profile barrel has a gas nitride finish for accuracy and durabiltly, and is […]
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