The HC92P dual port compensator has been designed to work great with Glock models 19, 17, 45, 34 and 26 as long as they are gen 4 or 5. It will fit all 1/2-28 barrels. This comp has been carefully constructed, keeping in mind end-user feedback. It was created to ensure that it's the best Glock compensator in the market, and it incorporates all the elements required by professional and recreational shooters alike. Some of its enhanced features include the following: The combined top port size is double the HC9XL The side ports have been removed for shooter who perform a lot of retention shooting Apart from the above, it boasts of the same legendary reliability as all Herrington Arms compensators. I.e., it is one hundred percent reliable with OEM stock springs, and it will smoothly run 115gr, 124gr, and even 147gr +P ammo. This means that there is no need to tinker with the insides of your everyday carry weapon.  However, it's the way it works that allows the dual port to really shine. It reduces felt recoil and muzzle flip by as much as 40 percent. Moreover, its removed side ports make it an outstanding compensator for CQB or range shooting. This compensator will turn your Glock into an amazingly accurate ‘tack driver’ of a weapon. It will also make it much easier to land faster and more accurate follow-up shots. Once mated to the Glock’s natural low bore axis, this compensator can almost completely eliminate the recoil and flinch factors. This holds particularly true for even a subcompact pistol like the Glock 26 since it is traditionally more difficult to control with full-power +P 9mm loads. It will also help you shoot much tighter groups at longer ranges. You won't have to waste time realigning your sights after every shot since your gun won't jump around every time you squeeze the trigger. Key Features of the HC92P Up to 40 percent vertical recoil reduction The compensator has easily passed the 4000-round durability test benchmark It has been precision engineered from very high quality and lightweight CNC machined 7075 aluminum for extra durability Its matt black type three anodized hard coat finish will enhance the rugged elegance of your Glock pistol One of the most practical upgrades for your EDC weapon DOES NOT WORK WITH KKM OR BARSTO BARRELS! REQUIRES A THREADED BARREL It can be installed easily. No need to take your Glock to a gunsmith Lifetime warranty. If you want an extremely reliable and highly effective compensator, then the HC92P is the right one for you. It will heighten your shooting pleasure and help you become a much better and faster shot. Most important of all, it can prove to be invaluable in a self-defense situation when you need to shoot rapidly and accurately to save your life.   DISCLAIMER: This product is not manufactured, authorized, endorsed,or warranted by GLOCK. GLOCK does not warrant or represent thatthis product is compatible with GLOCK pistols.