Very good for a small comp - Herrington Arms 9mm Handguns HA Universal Pistol Compensator

The comp works well. On a g19, it works with the stock recoil spring on all the ammo i have tried ao far (115gr range, 124gr +p, 115gr +p+)

It's very small and light but still works as a good comp, unlike all the birdcage or micro comps that are basically just thread protection. On a g19, it fits flush with a tlr1-hl for a length comparison.

The mounting system could use some adjustment but its universal so ill give it a pass. Just put the right o-ring, put some red loctite on it and crank it till its where its supposed to be. Its super solid now and stays where its supposed. It sits nice and flush, at least with my barrel and slide.