The Erector by Q is the definition of modular.The Erector is made up of clear hard-coat anodized aircraft grade aluminum baffles, a mount and front cap, complimented by a heat treated stainless steel blast baffle. Notice, we didn't mention an outer tube.No outer tube means more internal volume, making this silencer so quiet it's in a class of its own.It's not only the quietest .22 silencer, it's also the lightest at only 2.6 oz in it's longest configuration. On top of that, it's also the loudest, longest, and shortest silencer on the market... Wait. What?Configure this silencer with one baffle, or all ten to fit the needs of your host firearm and ammunition. The choice is yours... choose wisely.FEATURES & SPECS CALIBER: 22 LR SILENCER WEIGHT: 2.6 oz (fully assembled) DIAMETER: .99 OVERALL LENGTH: 7.6( fully assembled) ATTACHMENT: 1/2-28 Direct Thread MATERIAL(S): 7075 Aluminum & 17-4 Stainless Steel FINISH: Clear Anodize & Heat Treated Steel MINIMUM BARREL LENGTH: None"But is it full-auto rated?!"Yes. You, and the two other people with a full-auto rimfire rifles can confidently use this silencer.