Keystone Sporting Arms Mosin Nagant 91/30, Bolt Action, Single Shot, 22LR, 11.5 Length of Pull, Walnut Stock KSA9130 The KSA 91/30 has a 20" barrel, precision-machined to ensure the durability and accuracy that is normally reserved for the big guns. The action is based on the proven, safe, single-shot Crickett design and has a straight-handled bolt, just like the original Mosins.