Pepperpot Muzzle Brake.
1/4 inch diameter hole thought the middle.
1 inch diameter and 2 1/2 inches long.
6 holes in 6 layers 3/16 inch diameter.
Not threaded and requires back end tapering to barrel diameter.
Needs fitting by an engineer or gunsmith.
Hi do you still have any for sale ?
Hi, Sorry for the delay - I don't tend to come here every day.
It is the only one I have, bought and never used, and yes it is still for sale.
Still for sale.