I would worry about holding zero for mid range combat, but for a cqb carry along, this looks like it's worth serious consideration. Even for carrying multiple barrel assemblies to take advantage of scavenged ammunition without having to carry entire upper receivers.
@@BrandensOutdoorChannel It all depends on the precision of their machining. Anything less than a few ten thousandths and the difference may not prevent accuracy at close ranges but I would bet that it would be off enough at 150 yards to need some Kentucky windage. Haha.
