08-08-2021, 10:43 PM
army.
Never seen that before however Montana was posting recently about out of spec lowers where the retaining pin hole has been drilled too far to the rear. Instead of the pin only stopping the buffer when the upper/lower are separated it does it every cycle. The buffer should be stopped on the forward stroke by the BCG when it goes into battery and not touch the retaining pin.
When you put the gun together and finally tilt close the upper does the BCG push back the buffer slightly as it closes or does it look like the retaining pin is still holding the buffer and recoil spring in?
Never seen that before however Montana was posting recently about out of spec lowers where the retaining pin hole has been drilled too far to the rear. Instead of the pin only stopping the buffer when the upper/lower are separated it does it every cycle. The buffer should be stopped on the forward stroke by the BCG when it goes into battery and not touch the retaining pin.
When you put the gun together and finally tilt close the upper does the BCG push back the buffer slightly as it closes or does it look like the retaining pin is still holding the buffer and recoil spring in?