The 10-8 Performance 1911 trigger was their first product, and remains a mainstay of the 10-8 Performance product line. Originating from a design by Hilton Yam and Larry Vickers, this trigger features a solid aluminum shoe with a serrated face, a full width stainless steel bow, and a fixed stainless steel overtravel stop permanently mounted from the rear of the shoe. This trigger eliminates all issues associated with loose overtravel screws -- no staking, Loctite, or other end user monitoring is necessary. Once the overtravel is set, it is good to go for the life of the trigger. The triggers are oversized and will require gunsmith fitting. Compatible with Springfield EMP short action compact 1911s in 9mm and .40.