I am starting to be interested in AR15 type rifles and am considering a 6.8mm
upper on a Bushmaster lower. While reading the Bushmaster catalog I noticed that the 6.8mm lower has a different order number than the 223 model? Anybody know what the difference is? My understanding of the whole 6.8spc caliber was that it is compatible with existing 223 receivers?
Anybody know what the difference is? My tendency is to go with the 6.8spc caliber for hunting purposes and then maybe pick up a 223 upper for range work.
upper on a Bushmaster lower. While reading the Bushmaster catalog I noticed that the 6.8mm lower has a different order number than the 223 model? Anybody know what the difference is? My understanding of the whole 6.8spc caliber was that it is compatible with existing 223 receivers?
Anybody know what the difference is? My tendency is to go with the 6.8spc caliber for hunting purposes and then maybe pick up a 223 upper for range work.