FPM Gunworks Sparkler Features The FPM Gunworks Silencers Sparkler is machined from 17-4 stainless steel and finished in Black DLC for a hard low-friction surface that resists corrosion and wear. At only 2.8 ounces and 2.17 inches long it adds minimal weight to the muzzle which keeps the rifle s balance point further back for quicker handling. The 1/2x28 thread pattern fits standard 5.56 and .223 Rem barrels making it a simple drop-on upgrade for most AR-platform rifles. Its compact dimensions mean it will not add unnecessary bulk to an already built-out muzzle device setup. Built to accept Q Plan B style Rearden Atlas and Rearden Atlas XL mounts the Sparkler gives shooters flexibility when pairing it with a suppressor system down the road. It can also be used to bring a 14.5 inch barrel up to the legal 16 inch overall length once pinned and welded in place. This makes it a practical option for shooters working within barrel length requirements who still want a lightweight muzzle device. For a durable stainless steel flash hider finished in Black DLC the Sparkler is for sale at GrabAGun. FPM Gunworks Sparkler Specifications Manufacturer: FPM Gunworks Model: Sparkler Caliber: 5.56 / .223 Rem Material: 17-4 Stainless Steel Color: Black Length: 2.17 Thread Pattern: 1/2x28 Weight: 2.80 oz Available At: GrabAGun