Also the mags for the Vet are wider so they will accept longer ammo. Out of the differences mentioned though, the biggies for me are the anti double feed and the transfer port. The T port design is genius, all guns should be built that way. It is not a part of the barrel itself, it is made like the exhaust port on a two stroke motor. It has a bridge at the bottom and is wide open on either side. According to Matt at R&L, it means 100 fps over a tradional design.