I can't help the OP find a 5" barrel, but I thought that I could help my friends in the land of the free somewhat grasp the insanity that represents the Canadian Firearms Act which was enacted by the Liberals in 1995 and created classes of firearms called "restricteds" and "prohibiteds". Included in this class of firearms is any handgun with a barrel length of less than 4.2". Thank God that S&W, Ruger, and some others are building 4.2" 686's, GP100's, and a few others. Prohibited handguns CANNOT be transferred to heirs. Those who owned one prior to 1995 (I had one but sold it, not knowing what was coming) are grandfathered and may keep theirs for as long as they are alive, and in fact can purchase them from others like themselves. No one else can purchase or otherwise obtain them. You can bet that has reduced the resale value of a lot of really sweet guns. The ONLY exception is that prohibited handguns manufactured prior to 1946 (war souvenirs essentially) may be transferred to immediate relatives who are holders of a Restricted Possession and Acquisition Licence. Here's the exerpt from our lovely regs:
Next of kin of grandfathered individuals
(7) A particular individual is eligible to hold a licence authorizing the particular individual to possess a particular handgun referred to in subsection (6.1) that was manufactured before 1946 if the particular individual is the spouse or common-law partner or a brother, sister, child or grandchild of an individual who was eligible under this subsection or subsection (6) to hold a licence authorizing the individual to possess the particular handgun.
This is what represents "restricted" and "prohibited" firearms up here. Read it and laugh, while we weep:
“restricted firearm” means
(a) a handgun that is not a prohibited firearm,
(b) a firearm that
(i) is not a prohibited firearm,
(ii) has a barrel less than 470 mm in length, and
(iii) is capable of discharging centre-fire ammunition in a semi-automatic manner,
(c) a firearm that is designed or adapted to be fired when reduced to a length of less than 660 mm by folding, telescoping or otherwise, or
(d) a firearm of any other kind that is prescribed to be a restricted firearm;
Believe it or not, ARs are only allowed on certified ranges. Up here they are target and 3-gun rifles only.
“prohibited firearm” means
(a) a handgun that
(i) has a barrel equal to or less than 105 mm in length, or
(ii) is designed or adapted to discharge a 25 or 32 calibre cartridge,
but does not include any such handgun that is prescribed, where the handgun is for use in international sporting competitions governed by the rules of the International Shooting Union,
(b) a firearm that is adapted from a rifle or shotgun, whether by sawing, cutting or any other alteration, and that, as so adapted,
(i) is less than 660 mm in length, or
(ii) is 660 mm or greater in length and has a barrel less than 457 mm in length,
(c) an automatic firearm, whether or not it has been altered to discharge only one projectile with one pressure of the trigger, or
(d) any firearm that is prescribed to be a prohibited firearm;
The last line essentially means that any firearm the Royal Canadian Mounted Police decides should be prohibited gets prohibited. It's a little more complex than that but that's the gist. These are the things we are working on via Canadian guns organizations and our current Conservative government.
Sorry for the hijack! Back to regularly scheduled programming.