ROCK ISLAND ARMORY TM22 MANUFACTURED BY DERYA ARMS CHAMBERED IN .22LR UNLIKE MANY STANDARD RIMFIRE RIFLES THAT UTILIZE POLYMER CONTRUCTION, THE TM22 RECIEVER AND HANDGAURD ARE CONSTRUCTED FROM 7075 AIRPLANE-GRADE ALUMINUM AR-15 STYLE STYLE PISTOL GRIP AND AN ADJUSTABLE TELESCOPING STOCK MOUNTED TO A COMMERCIAL-SPEC BUFFER TUBE ALSO UTILIZED A TACTICAL LEFT-SIDE CHARGING HANDLE. SCOPE IS A CABELAS "AR"  SERIES MAGNIFIED RIFLE SCOPE SN#TG970-23A85923