Browning BAR MK3 Stalker Features The Browning BAR line covers a wide range of tastes and has a long standing tradition for achieving bolt action like accuracy in an autoloading rifle. The Browning BAR MK3 Stalker gas system combined with a 7-lug rotary bolt give the shooting significant recoil reduction for comfort, while at the same time locking in bolt action-like accuracy. The action is surrounded by a recessed bolt face, which is encircled by the barrel and then surrounded by the receiver. Three complete rings of steel surround the cartridge.