Some of you will remember the elation of the release
Of the American 55x series of rifles. Many forum members thought a real gem was enroute, the marketing folks made it feel that way.

Alas, fish gills later, we got a turd.

I promptly withdrew my deposit and bought an early XCR.

It is a great rifle, I SBR’d it and bought a bunch of upgrades for it.

A problem has developed and I need some help to figure it out.

Trigger will not reset. I’ve taken the fire control unit apart twice, all looks good to me.

https://youtu.be/7HhPL7Qea0A

Appreciate it.

Did you talk to RobArms? Looks like the trigger return spring has sprung

Part #9 X-LR-HM-SP XCR Trigger Spring $3.00

https://robinsonarmament.com/x...ower-receiver-parts/

I have an XCR too but my guess it is a spring as well.

Disconnector spring