Herrington Arms HCDG PSA Dagger / Glock Gen 3 Compensator Flat Dark Earth. The HCDG Compensator for the Palmetto State Armory Dagger will work with the stock springs provided your gun has gone through recommended break in period of 500 rounds factory new ammunition is used with the threaded barrel you intend to use with the firearm. Fits on factory 1/2-28 threaded barrels or most aftermarket Glock barrel. Specifications for Herrington Arms HCDG PSA Dagger / Glock Gen 3 Compensator: Manufacturer: Herrington Arms Fabric/Material: 7075 Aluminum Gun Make: Glock Model Generation: 3 Length: 0.85 in Features of Herrington Arms HCDG PSA Dagger / Glock Gen 3 Compensator Engineered to greatly reduce vertical recoil of your gun Highly durable 7075 Aluminum for extreme longevity and lightness Uses Steel replacement 8-32 set screws WILL NOT WORK ON THE MICRO DAGGER THE NO FIN HCDG will work with the Ruger RXM DOES NOT WORK WITH KKM OR BARSTO BARRELS REQUIRES A THREADED BARREL Works with ONLY PSA Dagger 9mm models Length is .85" inches long Blems are cosmetic ONLY. They will function as normal Package Contents: Herrington Arms HCDG PSA Dagger / Glock Gen 3 Compensator 5/64 Allen key Steel replacement 8-32 set screws What firearm models does the manufacturer say Herrington Arms HCDG PSA Dagger / Glock Gen 3 Compensator is compatible with? The manufacturer says that Herrington Arms HCDG PSA Dagger / Glock Gen 3 Compensator is compatible with Universal Palmetto State Armory DaggerHerrington Arms HCDG-NOFIN-FDE: HCDG PSA Dagger / Glock Gen 3 Compensator Flat Dark Earth