Piston Guns?
Does anyone have strong feelings about the Sig MCX or PWS uppers?
The MCX was actually designed as a piston gun. The PWS is a retrofit, which has issues no matter what.
Published
Piston Guns?
Does anyone have strong feelings about the Sig MCX or PWS uppers?
The MCX was actually designed as a piston gun. The PWS is a retrofit, which has issues no matter what.
Tumblr refugee 