I don't have one, but by comparing the specs to the old Mod 0, they do look better. Free float barrel, the piston is now easily disassembled so you can remove the charging handle without having to push out a pin in the mod 0. For guys like me who only put on optic/buis/sling and don't weigh down a carbine with all kinds of gadgets and widgets, the slimmer, lighter rail is the way to go. (the new rail still has a port for a push button sling mount)