I served in VietNam in 1969-70. I was issued an M16, but lusted after a CAR-15. Fast forward 55+ years, and now I can have an H&R CAR-15 (OK, XM177E2). It has a 12.7" barrel with a pinned and welded FAKE moderator. Since the moderator serves no "moderating" purpose, why not just have a correct-looking shell over a 16" (or so) barrel. That would avoid the loss of velocity from the shorter barrel, but would look exactly the same. After all, it also has "fake" gov't markings, etc. so why should a non-moderator that doesn't moderate also require the shorter barrel? What would be wrong with this?