Shockwave type pistol shot guns are the same darned thing, in a repeater.
You can thank T/C and the 45/410 Contender for that.
And the freaking NFA restrictions on SBR, and SBS became outdated.
They really only apply to antiques, because now you can just buy anything as a dedicated "pistol", add a "brace", and VIOLA !
Other than machine guns and bombs what's the darned point ?
It just irritates me . Not that I let it show.