Converts mil spec fire control group to a 3 position safety. Includes CNC safety cam, lever. Pre milled mil spec trigger. 2 different spacers to aid reliability. Pre travel adjuster screwed. Anti walk/rotating pins with torx wrench. Rounded detent, plus ball bearing detent for minimum friction/wear. Safe, semi and assisted reset. NOT full auto but does require full auto bolt profile ( most ar15s have them). One round per pull of trigger. Similar to WOT FRT Dairyland Rare Breed but 3 positions.
This is not compatible with AR-10/LR-308, AR 12GA, AR 22LR, or any platform not using a typical FA M16 BCG.
May require modifications to lower (mostly high shelf models) and/or upper...slight clearance being required on upper receiver.