FPM Gunworks Spleen Splitter Features The FPM Gunworks Spleen Splitter is a two port muzzle brake machined from 17-4 stainless steel a material chosen for its strength and resistance to the heat generated at the muzzle. Its black DLC finish adds a layer of wear resistance while giving the brake a distinct durable appearance. Threaded 1/2x28 the Spleen Splitter is sized for 5.56 and .223 Rem platforms making it a natural fit for most AR-15 builds. At 2.17 inches in length and 1.8 ounces it keeps the overall barrel profile compact while still providing genuine recoil and muzzle rise reduction through its two port design. Beyond standalone use the Spleen Splitter is designed to accept Q Plan B style mounts as well as Rearden Atlas and Atlas XL mounts giving shooters a path to add a suppressor later without changing muzzle devices. This is particularly useful for shooters running a 14.5 inch barrel where pinning and welding the brake brings total barrel length over the 16 inch threshold required by law. Because the brake stays light at just 1.8 ounces it keeps the muzzle end of the rifle from feeling front-heavy during extended shooting sessions. FPM Gunworks built the Spleen Splitter to combine genuine recoil control with long term suppressor mount flexibility. FPM Gunworks Spleen Splitter Specifications Manufacturer: FPM Gunworks Model: Spleen Splitter Caliber: 5.56 / .223 Rem Material: 17-4 Stainless Steel Finish: Black DLC Length: 2.17 Thread Pattern: 1/2x28 Weight: 1.8 oz Available At: GrabAGun