I really like a flat trigger and have, since October of 2016 enjoyed the IGFS Enhanced Duty Trigger. In that time I put 19,650 rounds through my EDC Glock 19. This is the only trigger I ever had in this gun, as I bought the frame and the IGFS trigger at the same time. After confirming that the trigger was safe and effective, I made this my everyday-carry gun.
When I noticed last week after 19K+ rounds that the trigger safety was not engaging properly, I removed the trigger and sent it back to the manufacturer for replacement and dropped the stock trigger assembly back in. The pistol no longer worked.
While training at the range yesterday, the trigger began to fail. For the first few rounds it felt odd, but I attributed that to my not being used to the stock trigger anymore. But then it failed completely and would not reset. I got a dead trigger, where I could pull the trigger repeatedly and got no striker fall. Then, after a few pulls, the striker would fall and the pistol would shoot.
I immediately disassembled the pistol and inspected the components, trying to diagnose. Others at the range, familiar with Glocks, joined in; all of us trying to discover what was going on. I carry a components box so I replaced the connector and the trigger spring in succession, and even put a drop of lube on the connector/trigger-bar intersection, re-trying the pistol, in an attempt to find the failure. No joy.
I noticed that the trigger pull articulated 2 clicks: an initial click, then the striker fall. This would prove to be the telltale symptom.
Each or us inspected the frame and slide components, trying to find the culprit. At last, my friend Jason had an epiphany and asked to see the stripped frame again. He looked carefully into the trigger guard and said that he found the problem.
The depression created by the repeated pressing of aluminum against the polymer created a ridge that blocked the stock safety tab from allowing the trigger to reset. The deformation of the polymer can be seen by examining the proper line the polymer in that are should take vs. the line created by the aluminum safety tab:
You can see there how the depression creates a ridge that rises above the proper line for that area of polymer.
So that I could again have a functional gun, I took a small file and removed the damaged-area: the ridge created by the IGFS trigger safety tab. Even so, the damage has been done. I believe it is only a matter of time before the safety mechanism no longer works. A stock trigger now functions, but it feels different. The reset has no telltale “click” like a normal Glock trigger should. So I now have a question every time I pull the trigger. “Will it work this time?” That’s not what a Glock pistol is supposed to give you. Rather, a Glock is supposed to give you 100% certainty; certainty now destroyed by the IGFS trigger. Needless to say, this is no longer my EDC gun.
Luckily I have another Glock 19 frame to use for my EDC. As I now await my replacement trigger from IGFS, I believe I should NOT put it back into the frame. I think this frame is now forever ruined. This is what happens when aluminum abrades polymer. In other words, Innovative Gun Fighter Solutions has a severe design flaw that they must fix, as their trigger will destroy every pistol into which it is installed.
Other Brands of Replacement Triggers
I notice that every flat-face replacement trigger on the market has an aluminum shoe and aluminum safety tab. I cannot say for certain, but it is possible that EVERY replacement trigger will destroy the polymer frame of the pistol. If so, this is bad news.
I don’t have the $ to test every replacement trigger to 19,000 rounds, but I believe every manufacturer should troubleshot its design and ensure their triggers are not destroying otherwise 100%-reliable guns.