@Sharp_Coyote: also I believe pistol and rifle laws differ, there may be more nuances than I realize.

@Doomguy666:

Then again, our firearms laws are exclusively federal, and do not have to navigate a myriad of state laws as you likely do.

Cases in point: no tax stamp for SBR, SBS or AOW; if a firearm is 660mm (26") OAL with a factory barrel (sawed-off = you are going to jail), it is legally non-restricted, assuming not rimfire or centrefire semi-automatic.

All handguns are limited to 106mm barrels or longer, and a magazine capacity no more than 10.

Semi-automatic centrefire long-guns are limited to magazine capacities of 5 or less, and no less than 18.5" barrel length.

So I can have an 8.5" DA Grizzly 12ga pump shotgun (Google it) legally, yet a KelTec CMR30 can only hold 10, and must have a long barrel and pinned stock. Laws, go fig.

@Doomguy666:

As the CMR30 is based on the PMR30 pistol, in (most) US states it can hold 30 rounds of .22 WMR, and be a fairly short carbine rifle with a retractable stock; 22.7" OAL with a US-legal 16" barrel and (collapsed) retractable stock.

Not here; in Canada, as the CMR30 is based on a pistol frame (and not a centrefire rifle), it can legally hold up to 10 rounds (else it would be 5), yet can not be less than 26" OAL (barrel length irrelevant, so long as it is a factory barrel, so 16" USA for now) with a pinned stock, lest it be considered restricted, and treated as a pistol; the Canadian legal variant is 29.9" OAL.

Fucking laws, on both sides of the border ...