Working on a long range K-31 Swiss

[Latigo]

What kind of a scope is that?

*Forgot to mention.... Gunner, our Clamp On Muzzle Brakes don't affect accuracy at all, at least we've never had a report of that happening.
They definitely reduce felt recoil by a bunch.
The difference between the Clamp On and the Threaded Brake is that the Threaded Brake has a smaller diameter opening. Its perfectly concentric to the bore if the threading is done properly using the Bore Pilot, and the Clamp On depends on the OD of the barrel. Not all k31 barrels are exactly alike, so the opening of the Clamp On is slightly larger to prevent any uneven gas upset.

Latigo