ZEV created the market for Glock trigger upgrades. The Pro Trigger Flat Face bar assembly is built from the ground up to perform better and more reliably than anything else on the market. At the core of PRO Flat Face trigger is the proprietary trigger bar and professional connector. It delivers the crispest, cleanest trigger pull available. The trigger pad features a revolutionary riveted assembly process that makes it a longest lasting and reliable replacement trigger. This model has aluminum construction and black/red finish. It is compatible with Glock 17/19/22/23/24/26/27/34/35 Gen1-4.