[GhostShooter]

How would a pinned muzzle break work on a rifle? Do you have to drill the rifle for the pins and then use something to keep it in place?

http://www.stopstart.freeserve.co.uk/smilie/2M16.gif

[swingset]

Depends on the style of the brake and your willingness to modify rifle.

Some "pins" are indeed driven through the brake, into a "slot" on the rifle's barrel, where they are held in place...just as some front sights themselves are attached.

Other, more common aftermarket styles use set-screws to dig into the barrel's surface to remain on the barrel. These, however, have a tendency to work themselves loose. When I've used set-screw brakes, I've drilled a "divot" into the barrel for the set-screw to sit in and make the brake more firmly attached.

[Destructo6]

For compliance, it's usually screwed on, a blind hole is drilled, a pin inserted, welded over, ground down, and refinished. The pin's location should not be easily spotted.

[yzguy]

for AK's you can press out the front sight pin (2 pins hold on the front sight) put on the brake, and put in a longer front sight pin to hold them both....