It's pretty solid - the opening at the rear is sufficiently large to use a crush washer or jam nut, but could be increased to reduce weight. I think it improves the balance, but the gun is already heavy when accessorized, so it's not that bad. I plan to cerakote it in the future, and the knurling allows purchase for a cloth suppressor cover to attach and hold nicely. I'm super happy with it - almost zero increase to OAL (actually decreased compared to factory), in exchange for basically having a bare muzzle for flash suppression and concussion; I'll see how spicy it is to shoot it, but I really don't mind.
Bradley