r/canadaguns • u/Mammoth_Attention_59 • Aug 03 '25

BCL MRX mags in Renegade

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As title suggests:

I bought some mags, but encountering the following:

  • bolt will not go forward
  • extremely tight in mag well

After comparing to pmags, it seems the spine of the MRX mag is higher.

Is it legal to mod these mags? Anyone have experience making this work?

I just wanna go pew pew with a 20 rounder lol

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u/gnu_gai Aug 03 '25

"Overcapacity" magazines are prohibited devices, and modifying a magazine is considered to be manufacturing; therefor modifying an MRX magazine to fit a rifle is manufacturing a prohibited device. On the other hand, manufacturing a non-restricted firearm for personal use doesn't require any special license; so you can modify an NR semi-auto rifle to feed from MRX magazines because the magazines are still considered to be intended for a manual action rifle.

Not a lawyer, especially not your lawyer, etc. etc. Call CFO to confirm if you like

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u/Vintage_Pieces_10 Aug 03 '25

If I’m not mistaken, I thought self-manufactured firearms (aside from parts kits and the like) even for personal use was reclassified under the “ghost guns” clause when Trudeau redefined firearm terminology just after the handgun freeze?

Because before you’re right, as long as you had that class of license (aside from prohibited), you could manufacture your own stuff. But now I thought it was a grey area?

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u/gnu_gai Aug 03 '25 edited Aug 03 '25

Could be. I see the parliamentary committee notes wherein they talk about ghost guns, but I don't see any actual changes to sec.99 of the Code or the Firearms Act

Edit: I found the changes; they added to the Firearms Act in sec.102, making it an offence to access, possess, distribute, or make available computer data related to the manufacture of firearms; with examples being 3D printing files or milling machine code

Nothing on using hand tools to modify an existing firearm that I can see

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u/Vintage_Pieces_10 Aug 03 '25

Modifying an existing firearm is still legal (I made a post about a job I did awhile ago). It was the build-from-scratch approach I thought was illegal thanks to Trudeau (which is super bunk because I’d love to take a stab at crafting a legal firearm for personal use)