r/canadaguns • u/JerkyMan360 • Aug 04 '26

Misc MRX mag question

Hypothetically if a person were to modify a pump action rifle receiver that uses an AR magwell to fit MRX mags would that be legal? If so would modifying the magazine to have only one set of fins and modifying the rifles’ magwell to fit the one set of fins be legal?

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u/Murray3-Dvideos Aug 05 '26

Magazines designed for manual actions. I did say "Layman's Terms". Although I could very well be wrong about the legalities of modifying a semi autos magwell to accept magazines designed for manual actions. If it is legal, its odd that ive never seen anyone do it in the 20 years ive been shooting, but then again maybe good manual arm magazines with a capacity greater then 10 were pretty much non existent anyways.

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u/MostEnergeticSloth Aug 05 '26 edited Aug 05 '26

Hunting gear guy had a video with his 180 where he was shooting an MRX magazine. It was just never explicitly mentioned and editing was cut such that it never fired 20 rounds. People just don't talk about it because

1) It's not necessarily fast to do

3) It involves cutting up a gun which usually cost people a lot of money (semi-autos these days) and some people aren't keen on that.

And you're also correct; "manual action" magazines that would hold more than 10 and theoretically could work in modern semi-autos didn't exist even 10 years ago. It's one thing to cut up a rifle, but with feed geometry and retention method, there really weren't any options.

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u/Murray3-Dvideos Aug 05 '26

Well I learned something today, thanks fellas

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u/MostEnergeticSloth Aug 06 '26

Also just a quick fyi since I went to double check to make sure I wasn't losing my mind/memory, it was actually the SBI Lynx 180 video not a WK one.

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u/JerkyMan360 Aug 06 '26

Peculiar🤔