Q Erector 9

The Q Erector 9 takes modularity further than any other 9mm can on this list. It is tubeless: each baffle is its own threaded module that screws to the next, so there is no outer tube limiting configuration. Run all ten baffles for maximum suppression at 8.7 inches and 8 ounces, or strip down to a single baffle and drop under 4 inches and roughly 5 ounces when length matters more than sound. No other pistol can lets a shooter tune the length this granularly.

The Erector 9 ships in a 10-baffle configuration with a 1/2x28 piston for tilting-barrel handguns, and it is wipe-compatible for shooters who want the extra sound reduction a wipe provides on a host they shoot rarely. The baffles are aluminum with stainless components, which keeps weight down but limits it to semi-auto 9mm use rather than full-auto subgun duty.

The Erector is the pick for a tinkerer who wants one can that can be a near-flush 4-inch carry suppressor one day and a full-length range can the next, all without buying a second product. The tradeoff is that the tubeless design takes longer to assemble and clean than a one-piece can, and the aluminum baffles are not built for sustained full-auto fire.