The PTR 9SDM is a factory-configured, integrally suppressed 9x19mm short-barreled rifle built around PTR's roller-delayed blowback operating system. This configuration pairs a ported 6-inch barrel with the purpose-built PTR VENT SDM suppressor, Universal SD Adapter, and PTR CS1 collapsible stock. The specially engineered barrel ports are positioned within the rifling grooves to redirect gas and reduce supersonic ammunition to subsonic velocity while helping prevent bullet-jacket damage and minimize fouling. Ported gas flows into the Universal SD Adapter, which captures and slows high-pressure gas before it enters the suppressor. The VENT SDM uses a HUB Bravo 1.375-24 mounting interface and is designed specifically for the 9SDM platform. The PTR 9SDM also features a 13.2-inch continuous steel Picatinny top rail, removable aluminum M-LOK forend, Magpul MBUS Pro steel sights, and an extended charging handle threaded to accept most Remington 700-pattern bolt knobs. Specifications Manufacturer: PTR Model: 9SDM Firearm Type: Short-Barreled Rifle Caliber: 9x19mm Action: Semi-Automatic Operating System: Roller-Delayed Blowback Barrel Length: 6 inches Barrel: Nitride Heat-Treated, Ported Barrel Overall Length: 5.74 inches Barrel Thread: 1/2x28 Barrel Interface: 3-Lug Barrel Twist: 1:10 RH Suppressor: PTR VENT SDM Suppressor Material: 3D-Printed Titanium Suppressor Technology: Purposely Induced Porosity (PIP) Suppressor Finish: DLC Suppressor Mounting Interface: HUB Bravo 1.375-24 Universal SD Adapter: Yes Optic Mount: 13.2-inch Steel Picatinny Rail Handguard: Mil-Spec Anodized Aluminum M-LOK Stock: PTR CS1 Collapsible Magazine: 30-Round Steel Trigger Pull: 9-10 lbs. Finish: Powder Coated Over Parkerizing Color: Black Length: 28.75 inches extended / 22.75 inches collapsed Weight Unloaded: 7.12 lbs. Included Sights: Magpul MBUS Pro Steel Front and Rear Included Magazines: 2 Included Case: Heavy-Duty Range Case with Contoured Foam Insert Included Accessories: Trigger Cable Lock Get it at BattleHawk Armory!