Walther Force B1, Combo, Bolt Action Rifle, 22 LR/22 WMR, (2) 16" Quick Change Barrels, Threaded 1/2X28, Matte Finish, Integrated M-LOK Rail, Synthetic Stock, 10 Rounds, 3 Ruger 10/22 Magazines, Includes Hardcase QUICK CHANGE BARREL SYSTEM, INTEGRATED OPTIC RAIL, USES RUGER 10/22 MAGAZINES, THREADED BARREL 1/2 X 28 1-22LR & 1-22 WMR BARREL,