My son is building a semi automatic rifle much like the M16. I helped him get a pin out of the carry section. He never got it in completely with a press. He bought another pin & with much effort we got it in fully.
I didn’t remove the entire vent from the door so hopefully I can get the pin in. By the way, I don’t have a rubber seal for the actual glass. I plan the use rubber gasket maker. I didn’t bend the frame so it should be a tight fit. Does that sound doable?thank you Hansen!