Weighing in at a mere 5.6oz the .22LR DEFCAN-22 brings superior sound suppression to your favorite rimfire cartridges. The scant weight and 1 diameter allow the DEFCAN-22 to be as at home on a handgun as it is on the end of a rifle. - Removable end caps and baffles make user serviceability a cinch for cleanup while baffle indexing marks make for quick reassembly that assures you get optimal sound suppression once it's reassembled. A hex opening on the front cap allows a 1/4 allen wrench or hex bit to be inserted for easier disassembly in the event any carbon fouls up the threads. - .22 LR Full-Auto Rated - .17 HMR/.22 Mag Semi-Auto Rated - Material: - Rear Cap: 4140 Steel - Tube: Anodized 6061 T-6 Aluminum - Baffles: Heat Treated 17-4 Stainless Steel - Front Cap: Anodized 6061 T-6 Aluminum - Caliber .22 LR - Muzzle Thread 1/2 x 28 - Finish Hard Coat Anodized - Weight 5.6 oz - Length 5.5