FLHTCUI: Your interpretation/information inaccurate. No offence intended. The mag capacity issue circulates a lot here. It's very confusing.
I own 3 different non-restricted pistol carbines. They all came with 10 round pistol magazines, all legally, and directly from 3 different legit dealers. Mags and Firearms have different rules governing them. The rules you quote apply to magazines. Therefore, as it says in #4 of your post:
"the maximum permitted capacity (of the magazine not the rifle) remains the same (for the magazine not the rifle) regardless of which firearm it might be used in."
The CX4 rifle is legally sold with 2 x 10 round factory beretta pistol magazines for use in this rifle. They are stamped as pistol magazines. They are not pinned and never were pinned but they are limited to 10 rounds (most double stack pistol mags can hold many more rounds than 10 in 9mm but the limit is still 10).
Unfortunately, these non-restricted CX4's do not actually accept PX4 mags right out of the box. They may slide in but they are not interchangeable. Otherwise I would get one. But if they were, you could definitely use them legally as the mags are stamped for pistols. The rifle uses pistol magazines.
But, any 10 round centrefire pistol calibre mags would be prohibited if stamped for use in a 'rifle'. Even a factory CX4 magazine that is stamped as a 'CX4 rifle magazine' (if they even exist) would be prohibited in Canada. You can't have a 10 round centerfire RIFLE magazine but you can have a 10 round PISTOL magazine ... even in a calibre like 5.56 or.308. XCR makes a pistol for sale legally in Canada and the 10 round .308 magazines it ships with are perfectly legal.
In Canada, if you write "pistol" on a centrefire magazine at the factory the capacity can be up to 10. Stamp 'rifle' on it and it's limited to 5. Regardless of calibre ... crazy rule. That's why we have legal 10 round 5.56 magazines in Canada. Because we have legal 5.56 pistols (restricted of course, but, legal). Keltec plr-16, XCR micro-pistols, etc ...
Pistol magazines are limited to 10 regardless of use. I can use my glock17 mags in my sub2000 interchangeably if I choose to. The gun shipped with a factory 10 rd glock mag. If the magazine is manufactured for a pistol then it can have a 10 round capacity. Even if it is centerfire. Or even in a rifle calibre like 5.56 for that matter. LAR-15 pistol magazine. You can buy them legally, you can use them legally.
Conversely, rimfire magazine have no limit UNLESS they can be used interchangeably with a rimfire pistol. Then they are limited to 10. In this case the rule works against higher capacity. If a manufacturer makes the a ruger 10/22 pistol available within Canada then all those high cap magazines that everyone loves would become prohibited by default because they could be used that pistol. My buddy just had that problem with his mossberg 715T. They have to be pinned to 10 even thought they are rimfire because mossberg now sells a 715t pistol in Canada. He pinned them. Crazy ...
Similarly, if a pistol calibre magazine is manufactured and stamped for use in a rifle, then, it must be limited to 5 rounds. Even though it uses pistol calibre cartidges.
Loophole or not, we have legal 10 round centerfire pistol magazines in rifle calibres in Canada. For now ...
Some reading for you...
http://globalnews.ca/news/365051/lo...ound-magazines-in-some-semi-automatic-rifles/
Also Shaun, had to do some more research on this one as well.
The CX Storm can use the PX Storm Pistol magazine , but it would have to have had the magazine well modified to accept that Pistol Magazine.
The Pistol Magazine can not be switched for use in a carbine rifle and would have to be pinned to five rounds (Pistol Magazine) for use in the CX Storm carbine with longer barrel and it being the non Restricted firearm.
From an old post when I was researching buying on ...''From the RCMP web site , Maximum Permitted Magazine Capacity Special Bulletin for Businesses No. 72:
3) Magazines designed or manufactured for both centrefire calibre semiautomatic rifles and other (non-semiautomatic) rifles
Magazines designed to contain centrefire cartridges and designed or manufactured for use in a semiautomatic rifle are limited to five cartridges. However, magazines designed to contain centrefire cartridges and designed or manufactured for use in a rifle other than a semiautomatic or automatic rifle, do not have a regulated capacity. Magazines that are designed or manufactured for use in both semiautomatic rifles and other (non-semiautomatic) rifles are subject to the semiautomatic rifle limit of five cartridges.
4)4. Magazines designed for one firearm but used in a different firearm
The maximum permitted capacity of a magazine is determined by the kind of firearm it is designed or manufactured for use in and not the kind of firearm it might actually be used in. As a consequence, the maximum permitted capacity remains the same regardless of which firearm it might be used in.''
But, dont take my word for it, do some digging and some reading...IIRC it was P&D that did a whole bunch of leg work on this topic several years ago and they had some useful information about the CX Storm magazine and the PX Storm magazine for the pistol.
Tight Groups,
Rob