The Naughty 9 - So Thirty Caliber wasn't enough for some folks. The masses urged us to fast track a larger bore Ultra Compact Suppressor. We heard you and we have your needs in mind. We humbly present the newest member of our UCS Family of fighting suppressors The Naughty 9. Just like our original Canooter Valve and the Dirty 30 the Naughty 9 is designed to be compact robust and keep the cost of owning a quality suppressor under $500 including the cost of the NFA stamp. - 4 Overall Length - 9mm - 5/8-24 Threading - 1 5/8 Diameter - 13.8 Ounces - NO BLOWBACK through the charging handle - Made from 416 Stainless - No Barrel Restriction - Full Auto Rated - Custom Serial Numbers are available upon request - The Naughty9 is Perfect for your MPX PCC or Truck Gun