The Zaffiri Precision Threadless Compensator is an easy to install aftermarket add-on for flatter shooting. Our solid 416R stainless steel match grade barrel and strong 17-4 threadless compensator allows for not only gas redirection but less muzzle climb due to its weight. What does that mean for you?! Faster follow-up shots. Using a Ransom Rest we found a 33-35% decrease in muzzle flip when testing with a wide variety of ammo. Utilizing our Ball-Vise locking system (patent-pending), it takes just one set screw to install. With it s unique design to bypass the need for a threaded barrel, this is one must-have piece for your collection. Threadless Micro Compensator Compatible only with the provided ZP Threadless Comp Barrel Finish: Polished TiN (Gold) Machined from 17-4 Stainless Steel Ball-Vise locking system -. Line up the comp on the provided barrel, tighten down, and fire! 120 port opening to concentrate downward forces while minimizing horizontal losses Measurements: .55 x .85 x 1.27 . Adds .6 length to slide Weight: 1.26 oz Barrel Fit: Sig Sauer P365 Compatible Drop in fit for 9mm Threadless and extends past slide muzzle hole to accommodate Threadless Compensator Machined from 416R Stainless Steel Rifling: Broach Cut 6 Groove Twist: 1/10 Stress relieved and heat treated to RC 40-42 Made in USA at our facility in Largo, FL