Armscor Magazine, 22 LR, 25 Rounds, Fits TM22, Matte Finish, Black, Polymer Construction D050572 The RIA Imports TM22 Magazine is a standard factory replacement magazine. This magazine is for TM22 Rifles chambered in 22LR and holds 25 rounds of ammunition. These magazines are constructed from high strength polymer and are made to Armscor/Rock Island Armory specifications and tolerances. Using the same manufacturing and materials as the original equipment magazines" these magazines ensure a perfect fit and operation.