INDICATORS ON BELGIAN BROWNING DOUBLE AUTO YOU SHOULD KNOW

A lot of M1 Carbines were issued with a simple L-type rear peep sight, which could alternate between two distinct peephole heights for a hundred and fifty- and 300-yard ranges. The sight was fastened within a dovetail atop the receiver and not adjustable. These are the parts that empower adjustment for various masses. Failure To do that adjustment