2011 Cycling, feeding next round, leaving Hammer at quarter cock position. Why?

I recently purchased the Alpha Foxtrot Romulus comp. It has a great finish, cycles very smoothly. I did not experience any failures to feed, or failures to eject, or light primer strikes. However, something quite odd would happen, the gun would fully cycle, but I would go to pull the trigger, nothing would happen, and I would realize the hammer is in quarter cock position. Any ideas why this would happen? Could it have to do with the screws being too long from my optic? Additionally, I have noticed that my trigger pool is 4 pounds, whereas I’m hearing most people reporting a 3 pound trigger with these guns. Could it have to do with a heavily tuned sear? I’m new to the 20/11 platform, any advice is appreciated. I will most likely be sending it into Alpha Foxtrot.

I recently purchased the Alpha Foxtrot Romulus comp. It has a great finish, cycles very smoothly. I did not experience any failures to feed, or failures to eject, or light primer strikes. However, something quite odd would happen, the gun would fully cycle, but I would go to pull the trigger, nothing would happen, and I would realize the hammer is in quarter cock position. Any ideas why this would happen? Could it have to do with the screws being too long from my optic? Additionally, I have noticed that my trigger pool is 4 pounds, whereas I’m hearing most people reporting a 3 pound trigger with these guns. Could it have to do with a heavily tuned sear? I’m new to the 20/11 platform, any advice is appreciated. I will most likely be sending it into Alpha Foxtrot.