freewheeling
Member
Is this a matter of the parts kit or the lower receiver itself? I saw an M4 upper with a 14.7" barrel and it said that it would only work with a "designated AR15 pistol lower receiver."
It occurs to me that this has nothing to do with hardware, and everything to do with legal restrictions on barrel length, but I don't really know.
It occurs to me that this has nothing to do with hardware, and everything to do with legal restrictions on barrel length, but I don't really know.