The Erector by Q is the definition of modular. The Erector is made up of hard-coat anodized aircraft grade aluminum baffles" a mount and front cap" complimented by a PVD coated" stainless steel blast baffle. 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.