Alien Armory Tactical 3126 W.Clay St.Charles Missouri 63301, Sat 11-4pm, Sunday 11-3pm Upgrade your glock trigger! Sat the 27th and Sun the 28 bring your glock in and let's toss that spongy trigger in the trash and drop one of these bad boys in for only $80. Thats right tigger and free installation for only $80 while supplies last! This is for gen 1-4 only. We do have gen 5s available at regular cost and while your in you can ad some pins or maybe a mag release. Buy here and I install it for free!