GForce Arms Quietflow Engine No. 9 Features The Quietflow Engine No. 9 is machined and welded from 17-4 stainless steel across 10 baffles giving it the durability to handle sustained use on PCCs and centerfire range rifles alike. Its vented design reduces blowback for a more comfortable shooting experience and the full-auto rating lets it stand up to sustained cyclic fire without compromising performance. Rated across a wide caliber range from .17 HMR to .338 Win Mag the suppressor gives shooters a single can that covers rimfire intermediate and magnum rifle calibers without needing separate units for each platform. For shooters who run multiple calibers across different rifles the Engine No. 9's wide caliber rating eliminates the need for a suppressor per platform. Mounting is handled through a 1.375x24 HUB interface or included direct-thread hubs in both 1/2-28 and 5/8-24 covering the most common thread patterns found on PCCs and rifles without additional purchases. In-house testing from October 2026 measured the Engine No. 9 at -31.5 dB at the muzzle on 9mm using a 5 inch pistol barrel and 147 gr subsonic ammunition. For shooters who want one suppressor ready to mount across multiple thread patterns out of the box the Engine No. 9's included direct-thread hubs deliver that versatility for sale at GrabAGun. GForce Arms Quietflow Engine No. 9 Specifications Manufacturer: GForce Arms Model: Quietflow Engine No. 9 Type: Suppressor Caliber Rating: .17 HMR to .338 Win Mag Overall Length: 6.74 Diameter: 1.62 Weight: 16.3 oz Baffles: 10 Material: 17-4 Stainless Machined and Welded Mount: 1.375x24 HUB Bravo Direct-Thread Hubs: 1/2-28 and 5/8-24 Included Design: Vented Full-Auto Rated Finish: Black Sound Reduction 9mm: -31.5 dB at the Muzzle Available At: GrabAGun