Does not fit properly on all tri-lug mounts. - Angstadt Arms 3-Lug Blast Can Muzzle Device

As stated, this does not fit properly on all tri-lug mounts, specifically, it does not work well on my HBI mount. Difficult to get on and has to be tapped off from behind with a punch to remove. I do have an Angstat mount, and it appears to be a smooth interface with it, but unfortunately for me, I needed this for something that was not equipped with said mount. In short, this is not a smooth/universal option for all tri-lug systems.