Does anyone know where I can buy or get the specs for the part on the  open bolt auto sear that releases the hammer so I can have it machined?  I tried to buy the complete set on Gun Broker but at almost $2,500 is just too rich for my budget. I do have a fire control set coming from the Tactical Innovations AM15. I also have a friend who has a Colt open bolt carrier. He said that I could use it to get the specs from. So the only part of that system I am missing is the trip that releases the hammer from the auto sear location. Any information would be greatly appreciated.

Scott

You can probably figure it out from the patent drawings: US 007806039

Thank you for the reference. It is frustrating that I can get all the parts but one.

Scott

Gun Broker has one and I bought it with the "Buy Now " option.

Scott

How much did it cost on Gunbroker?