Made from hardened tool steel and parkerized. M1A Gas plug is vented and bored 58% greater volume in the plug area. Greater volume and venting equals 2600 psi less pressure (avg.) on op-rod. Cleaning drill with handle, and tip cleaner included.
Service rifle legal 1/64" hole per CMP rules!
Has the same appearance and configuration as original; CMP 4th Edition #4-13-B-b.