AR-15 Drop in Auto Sear Auto Selector Full Stainless Steel

One of the first methods of converting an AR to fire full auto is to install a part known as a Drop-In Auto Sear, or DIAS. The DIAS requires an M-16 hammer, selector, and bolt installed in the rifle. The “Drop In” appellation refers to the end-user not having to machine the lower to accommodate an auto sear, as a secondary auto sear is part of the DIAS. A DIAS doesn’t require a third pin hole, though some receivers will require some milling. When a DIAS is installed in an AR lower, the hammer is cocked by the bolt carrier as it moves rearward. The carrier pushes the hammer down and the sear of the DIAS grabs the hammer. As it moves forward again, the carrier catches the top of the sear in the DIAS assembly and releases the hammer. Specifications Material: Full Stainless Steel Process: Precision-CNC Machining Package List DIAS HOUSING DIAS SEAR