General Discussion
In reply to the discussion: A "high firepower weapons ban" [View all]NickB79
(20,371 posts)Say that the system devised makes it illegal for an AR-15 to use a high-capacity magazine AND use full-power ammo. It would have to use either one or the other to be legal.
A manufacturer could simply market a modified upper barrel assembly for that rifle that could reliably cycle lower-velocity ammo, and an ammo maker could introduce lower-velocity ammo, and the gun would be legal to own and use. Something similar has happened before: when California made .50-cal rifles illegal, a manufacturer started selling .416-caliber barrels and ammo: http://en.wikipedia.org/wiki/.416_Barrett
Now, you might say "but the lower-power ammo would make it less lethal though."
Not necessarily. A 5.56mm round, loaded with a frangible bullet designed for hunting small game and varmints, would still fragment and expand at lower velocities. You would see the same damage done as you'd see with an FMJ bullet today.