The Mossberg 590 Shockwave is another one of those fantastic discoveries in the hideous nature of confusing gun laws. It’s not really taking advantage of a loophole, but it’s a convenient means to obtain a powerful and compact firearm. The addition of a stock provides you with a much more stable, easier to reload, and easier to aim and fire weapon. If you want a fun gun or a range toy, or if you are protecting witnesses from gangsters the 590 Shockwave is for you.