LAWS AND SAFE HANDLING

Magazine capacity limits in Canada: The 5 and 10 round rules

Last reviewed July 15, 2026

Canada’s magazine limits are two numbers with one twist. The numbers: 5 rounds for magazines designed for centre-fire semi-automatic rifles, 10 rounds for magazines designed for semi-automatic handguns. The twist: the limit attaches to what the magazine was designed for, not the firearm it’s sitting in. That design-based rule explains almost every “wait, how is that legal?” thread on Canadian gun forums.

Here’s how the caps work, the exceptions, and where owners get into criminal trouble without meaning to.

The two caps, precisely

Under the Criminal Code’s prohibited-device regulations, a cartridge magazine is capped at:

• 5 cartridges - if designed for a semi-automatic, centre-fire rifle (or certain other long guns);
• 10 cartridges - if designed for a semi-automatic handgun.

Exceeding the cap makes the magazine a prohibited device - possessing it is an offence even if you never load it, and no licence class makes it legal. The RCMP’s magazine page is the current-word source.

What has no limit

The caps are narrower than most people assume. Uncapped:

• Rimfire long-gun magazines - your .22 semi-auto’s 25-round magazine is legal;
• Magazines for manually operated rifles - bolt, lever, pump: no semi-auto, no cap;
• Tube magazines on many classic designs, following the same logic.

This is why the practical ceiling on a hunting rifle usually comes from provincial hunting regulations (many limit total capacity while hunting) rather than the Criminal Code - two different systems, as usual.

The design rule and its famous consequence

Because the cap follows the magazine’s design firearm, a magazine designed for a semi-auto handgun carries its 10-round cap wherever it goes - including into a rifle that happens to accept it. Several rifle platforms sold in Canada are marketed around exactly this: they feed from handgun-pattern magazines, so 10 rounds is their lawful capacity. It reads like a loophole; it’s simply the rule as written, and it’s been stable for decades. The reverse also holds: a 5-round rifle magazine doesn’t gain capacity by being used somewhere else.

Don’t extrapolate cleverness from it, though - “designed for” is a legal fact determined by the regulator, not by what fits where. Before buying any unusual magazine/firearm pairing, verify with the Canadian Firearms Program (1-800-731-4000).

Pinned magazines: legal until you touch the pin

Most over-capacity designs are sold in Canada pinned - permanently altered (rivet, weld) to the legal limit. The law’s line is sharp:

• Owning and using pinned magazines: legal. That’s the compliance mechanism.
• Removing, drilling, or defeating the pin: a criminal offence the instant the magazine can hold more than its cap. “I never loaded it full” is not a defence; capacity, not use, defines the device.

Buy pinned from reputable sources, leave the pin alone, and this rule never touches you. Inheriting or importing magazines? Check them - an unpinned original from abroad is a prohibited device at the border and in the safe. (Import rules apply to magazines too.)

Ammunition quantity, while we’re here

A related Reddit perennial: there’s no federal cap on how much ammunition you may own for personal use. The storage rules govern how (not readily accessible together with firearms unless locked appropriately; mind the fire hazard of sealed containers), and buying it requires a valid licence. Large stores of powder and primers for reloading run into fire-code and explosives-regulation limits - a municipal question, worth one call if you stockpile seriously.

Magazine questions are classic written-test material, and the classroom is where “what about this specific mag?” gets a designated instructor’s answer. Find a CFSC course near you - and until then, the safe defaults are: 5 in the rifle mag, 10 in the pistol mag, pins untouched.