PN M14-P-SS: M14/M1A GAS PISTON (IMPROVED)
** PATENT PENDING ** This is our newly designed M14 / M1A piston and is patent pending. The new design reduces surface contact with I.D. of the gas cylinder and has more room for carbon to build up. This allows the piston to move more freely without the interference of excessive carbon. During all of our testing, shooting 3 different barrel lengths and using our gas cylinder, we did notice a slight improvement in accuracy which was an added bonus. This piston is an improvement and is not the solution to solve accuracy issues.