Quoted Text
Jason
Just to be complete. It seems that the gun muzzle found for the Bushmaster for the LAV-25 has 8 vertical vents on most of my reference pictures.
The gun muzzle for the LAV-III has 4 vertical vents.
I don't have any other gun to compare only the one from RB not fluted for the LAV-25 with the 8 vertical vents.
HTH
Cheers
Seb
I think you will find that the barrels with the eight groves on the muzzle brake are the early / original version of the barrel.
The current "enhanced" barrel as it is sometimes refered to was developed in the 1990s as part of improving the entire M242. It is the fluted version and uses the muzzle brake with the three sets of four grooves.....it can be found on the LAV III, LAV 25, LAVA2, Bradley, ASLAV Type 1, and NZLAV (the NZLAV also has the gun camera on the right side of the mantlet) to name a few.
Here is the barrel on a Bradley...