A lot of M1 Carbines had been issued with a straightforward L-form rear peep sight, which could alternate among two distinct peephole heights for one hundred fifty- and three hundred-lawn ranges. The sight was preset in the dovetail atop the receiver and not adjustable. Thompson 1st showed the submachine gun https://barrettmodel82a150bmgtanr99305.shotblogs.com/5-simple-techniques-for-auto-ordnance-thompson-47117485