XCR-M Micro Length Upper Receiver (Approx. 15.75″ Long) with Type 3 Gas Block and Micro Length Gas System

Current Caliber none ...
Current Gas Port Position none ...
Current Gas Block none ...
Current Brass Deflector none ...
New Caliber none ...
New Barrel Length none ...
New Barrel Contour none ...
New Gas Block none ...
New Barrel Twist none ...
New Muzzle Device none ...
Brass Deflector none ...
Total:

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