5.56mm SR-15 KS-1, 13.7″-Upper Receiver Kit

5.56mm SR-15 KS-1, 13.7″-Upper Receiver Kit

PN:121435

Barrel: 13.7”, cold hammer forged, 1:7” twist, chrome lined, dimpled heavy profile

Caliber: 5.56mm NATO

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All NFA Regulations apply.

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