Just a quick question while we're talking about sending triggers to Bill Springfield (or wherever) for work. Can a lower be sent through regular mail or does it have to be sent through a FFL dealer?
No. AR15 triggers dont' fit in the XCR. There are no aftermarket triggers. If you dont' like the factory one, you can work it yourself or don't buy the platform.Resurrecting this thread because I noticed that the XCR's trigger doesn't come in a pack like AR-15s do. Is there a way to install aftermarket triggers like a binary trigger from Franklin Armory, Fostech Echo Sport or the Rare Breed FRT-15 trigger? Do you have to disassemble the trigger and try to reassemble it inside the XCR's lower? Does the fact that the lower is "lower" than an AR-15's make the dimensions incompatible with after market triggers in general?