Timney Triggers AR PRO, 2 Stage, Drop In Trigger, Fits Milspec AR15, Anodized 6061 Aluminum Housing, Black Oxide Finish on Trigger Shoe AR PRO Timney's engineers set out to create not only the ultimate AR style trigger to the exacting specifications of some of the best multi-gun shooters in the world, but a trigger that can withstand a lifetime of competition.