Grand Power Stribog TR22, Semi-Automatic Pistol, 22 Long Rifle, 10 Threaded Barrel, Aluminum Frame, M-LOK Rail, Matte Finish, Black, 25 Rounds, 3 Magazines GRP8588005808606 Stribog TR22, TR stands for training rifle, is a dedicated .22 LR version of the popular Stribog, offering a cheaper shooting alternative for training, or for those shooters who can not or dont want to own 9mm models. The TR22 is built from the same materials as the 9mm Stribog, has same interfaces for accessories and is as reliable as a .22 can get.