The new RA-140 will not reset. Passes function test with empty chamber and no magazine:
Set switch to safe and pull trigger. Hammer does not fall. Passes with no trigger movement.
Position switch to fire and pull trigger and hold trigger rearward. Pass. Hammer falls.
Charge bolt again while continuing to hold trigger rearward.
Slowly release trigger and listen for / feel of trigger reset. Pass. Trigger resets.
Pull trigger. Pass. Hammer falls
Info: Installed new trigger with new KNS anti-rotation pins. Just snugged them.
Did not adjust set screws of new trigger module.
Fired 10 rounds. 9 of 10 extracted and fed new round. 1 firing extracted and failed to feed new round.
During installation of new trigger module, its hole aligned easily with lower rcvr holes. It's not like there's a bind due to misaligned trigger / hammer pins / openings.