it is the standard barrel (not heavy barrel) with sights 24" .300 winchester magnum. i have just seen some muzzle brakes for other guns that slide over the barrel and clamp on, but my gun was not listed. the way i thought it was done was to drill holes into the end of the existing barrel by a gunsmith, which i thought was expensive. i have never had a gun with one, but as i get older, it seems more appealing to me. if i could get one that was removable, that would be a nice plus, as every so often, i get this overwhelming urge to have a gun kick the daylights out of me. i know, weird! but we all have quirks.