Schuster M1A Adjustable Gas Plug Steel Parkerized

This hardened steel gas plug is completely adjustable to match your particular load. This plug includes a locking set screw to solidly lock the plug in place and prevent shifting under recoil. Additionally, Schuster has added a hollow locking setscrew in front of the original setscrew to keep the screws from vibrating loose. Made in the USA. Lifetime factory warranty. Parkerized.NoteUnload firearm before making any adjustments! You will notice that the setscrew in the Gas Plug may be very tight and will not easily turn  by hand. Once installed in the rifle it will become much easier. The setscrew comes at a factory set position, air will easily blow through it. The rifle WILL NOT FUNCTION at this position. Use it as a starting point, then screw in as necessary until rifle begins to function.