Composite Max inventory provides an adjustable comb to dial-in eye-to-scope alignment and incorporates spacers for duration of pull adjustment The GAU-18/A is a lightweight variant from the M2/M3 and is also used over the USAF's MH-fifty three Pave Very low and HH-sixty Pave Hawk helicopters. These weapons use the M2HB https://browningfirearmstoreusa.com/rifles/browning-semi-auto-rifles/