Ten different configurable lengths with the included nine baffles means that modularity is the name of the game with the Dead Air Odessa 9. With caliber compatibility ranging from .22LR to 9mm and even 5.7x28mm, there's very little you can't do with this pistol suppressor. Due to its compact size - ranging from a tiny 2.75" to just 7.75" and 7.4 ounces in its full length - you'll barely even notice the Odessa 9 on the end of your barrel. As an added bonus, the 1.1" diameter means that you won't need suppressor height sights when used on most pistols. This is a big plus since most people don't run suppressed all the time. The Odessa 9 ships with a 1/2x28 piston mount, but you can also use a variety of other common thread pistons and a fixed barrel spacer. Dead Air Odessa-9 9mm Silencer w/ 1/2-28 piston