u/D-lahhh

So trying to make the right side airsoft mag release work. This is how the arm needs to be clearance for the new G3 mag release pocket. I have the actual latch modeled in cad. I'll 3d print one to test fit before milling one out of 7075.

The right side mag release on the g3 is going to take a lot of work. The arm hits in the new cutout for the g3 release. It shouldn’t be hard to clearance that. The problem is the Glock style latch itself. The g3 changed the latch. Aside from the spring notch in the wrong spot that someone mentioned, the whole arm should be remade. I should be able to make one that will work with the modified arm. 🤞🏽

As for the safety levers. The aluminum levers work just fine. The round barrel part of the lever is a little smaller but being aluminum, it wouldn’t matter.

Now to the flat face trigger. It’s very close but not a drop in. The first difference is the seer pin is a threaded pin. This is kinda nice as the vector pin is punched in and extremely hard. The threaded pin of the new trigger is slightly larger than the OEM. This means the slot in the frt needs to be opened up a little. A few passes with a file or a dremmel will do just fine. We are only talking about .002” maybe. The pin goes in, it just makes the trigger tight vs free moving. The bigger issue is the pivot pin. The pin for the OEM is 4mm (measured 3.95mm). The hole in the new trigger measures about 4.3mm. This is way too big and won’t work. The easy fix for me was to make a 6mm OD 4mm ID sleeves. A few min on the lathe and I made the sleeve from a 6mm stainless pin I have laying around. I stepped up the hole in the new trigger until i got to the 6mm but. It drills a hole to 5.98 mm so a perfect tight fit for the sleeve. This tool care of any slop in the trigger pin.

Last is the face at the back of the trigger that contacts the safety. The new trigger has extra material there. A simple round sander took enough material off. You just want to take off enough so there is about .010” space between the trigger and the safety in the safe position. The trigger feels really good now. Weight went up from 2 lb 14 oz to 3 lb 9 oz. It’s probably due to the shape and the leverage. It can also be the new sleeve is a little tighter then the OEM trigger. My sleeve id measured 3.98 and the In is 3.95mm. The OEM hole measure 4mm. I guess a 4mm reamer would fix this but it’s fine. Weight is in semi position.

So anyone looking for a bit different of a trigger and want to put the work in, it’s possible.

Was having issues in semi. After some indirection I found two issues. The frt works great. It was in semi and had a heavy trigger pull. It felt like two stages bad sometimes would get hammer follow. I also noticed the safety would move with a hard trigger pull.

The solution I found:

The hammer is a round barrel. The new seer had a flat face that interfaced with the hammer, I saw it was an arch. I cut an arch into the top face of the seer. You don’t want to change the height of the seer face. Just radius the top surface so it fits into the hammer barrel vs sitting tangent to it. This will raise the seer face up and give a more positive engagement.

The next step was to address the safety. The back surface of the trigger that contacts the safety is also arched. It stops on the safety in the semi shelf right on the corner. As you pull the trigger hard, it will rotate the safety touches the lower point on the trigger. The proper fix would be redesign this safety cam with the face rotated about 10 degree. I’m working on a new safety cam now. A simple fix is to round that corner so it fits into the arch of the trigger. This will give a full contact on the trigger.

After the fix, I get a consistent 2 lb 14 oz trigger pull in semi auto. This is on a gen 3 with no other trigger work.