The Herrington Arms HC92PV2 is designed to fit the contour of the Glock Gen 6 and Gen 5 slides . The V2 model is an updated design that has the same port geometry as the V1, but has better esthetics & lighting cuts that better suit GEN 5 & 6 Glock slides. The V1 and V2 are dual top port only compensator designed around close retention shooting to mitigate on gas escaping from the side ports towards the shooters face. The HC92P will work with the stock springs provided your gun has gone through our recommended break in period of 500 rounds factory new ammunition is used with the threaded barrel you intend to use with the firearm before installing a compensator. When testing this compensator, we have data showing it mitigating 35.4% of muzzle flip reduction depending on what 9mm load and Glock model is used. Product Features Dual top port design to mitigate 35.5% of vertical recoil Product Specifications Material: 7075 Aluminum Finish: Black Anodized or FDE Cerakote Compatibility: ONLY Glock 17/19/26/45/34/19x GEN 5 and GEN 6 (including the MOS models of) with 1/2-28 Barrels. Included: 5/64 Allen key - Steel replacement 8-32 set screw Length: 1.125 " long NOT COMPATIBLE WITH SILENCERCO, BAR-STO, KKM, OR EFK BARRELS