Finally purchased a Thompson lightweight. Always wanted one, but wow, went through roughly 300rds and the spring and pilot pin snapped in half. Auto-Ordnance did send out new parts. Since i work in a machine shop, i decided to make the parts myself, made the pilot pin out of a softer metal, just hardend the tip of the pin. This is a firearm that i wish i never bought, pure junk. 900$ spend and breaks after 300rds. But here is what i did, hopefully it works. I also gonna find a replacement spring, don't wanna us the A/O one they sent. I will never recommend one of these things to anyone.