FPM Gunworks Spleen Splitter Features The FPM Gunworks Spleen Splitter uses a 2 port design to vent propellant gas to the sides of the muzzle helping counteract muzzle rise and felt recoil on a .30 caliber or 7.62mm rifle. Machined from 17-4 stainless steel the brake is heat treated to improve its durability against the repeated thermal cycling that comes with sustained firing. At just 1.8 ounces and 2.170 inches long the Spleen Splitter adds very little weight or length to the end of the barrel compared to bulkier muzzle devices. Its compact size keeps the rifle s balance close to that of an unbraked barrel while still delivering genuine recoil control. Threaded 5/8x24 the Spleen Splitter is built to accept Q Plan B style mounts as well as Rearden Atlas and Rearden Atlas XL mounts giving it broad compatibility with existing suppressor mounting systems already on the market. For shooters running a 14.5 inch barrel that needs to reach the 16 inch minimum legal length the Spleen Splitter can be pinned and welded in place to bring the barrel over that threshold while still functioning as a brake. That dual purpose use as both a compliance solution and a functional recoil reducing device makes it a practical choice for short barreled rifle builds. For shooters needing a lightweight dual purpose 2 port brake the FPM Gunworks Spleen Splitter is available for sale at GrabAGun. FPM Gunworks Spleen Splitter Specifications Manufacturer: FPM Gunworks Model: Spleen Splitter Caliber: 30 / 7.62mm Material: 17-4 Stainless Steel Finish: Heat Treated Length: 2.17 Thread Pattern: 5/8x24 Weight: 1.80 oz Available At: GrabAGun