Amy Nguyen Feb 04 This Glock 17 Gen 5 Upgrade Blew My Mind (Binary Trigger) - OpenSIPS Trunking Solutions Overview Jan 22, 2019 · the gen 5 trigger is pretty good out of the box but i needed to lighten things up to get the gun to work with a lighter recoil spring. I ended up going with the tti gm3. 25 kit.