91stbombgroup.com91stbombgroup.com/91st_info/browning.50_cal_pamphlet.pdf · permits the breech...
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91stbombgroup.com91stbombgroup.com/91st_info/browning.50_cal_pamphlet.pdf · permits the breech lock to be forced down out of the notch in the bolt by the breech lock depressors engaging