Composite Max stock features an adjustable comb to dial-in eye-to-scope alignment and involves spacers for duration of pull adjustment The GAU-18/A is a light-weight variant of the M2/M3 and is used around the USAF's MH-fifty three Pave Very low and HH-sixty Pave Hawk helicopters. These weapons use the M2HB barrel https://funny-lists.com/story17754584/the-definitive-guide-to-browning-firearms