r/canadaguns • u/Mammoth_Attention_59 • Aug 03 '25
BCL MRX mags in Renegade
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
6
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
3
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?
2
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
1
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)
1
u/Mammoth_Attention_59 Aug 03 '25
But there is no laws that would restrict utilizing an “over capacity” mag if it fits, in a manual action rifle?
I’ve seen people use these mags in the renegade - just curious about experience!
But thank you for the comment, it overall is great info
3
u/gnu_gai Aug 03 '25
You can use a factory magazine in whatever firearm it happens to fit in, the capacity limit is based on whatever the RCMP decide the magazine is designed for. For example using 10 round pistol magazines in semi-auto rifles, or the RCMP retroactively deciding that all 10/22 mags are designed for the Charger pistol and therefor limited to 10 rounds
But for illustration let's say it's a couple years ago and you have an non-restricted AR180. Modifying the rifle to fit the 20-rounds MRX magazine is fine, because you can manufacture NR rifles for personal use with just a PAL, and you don't need to register the changes. But modifying an MRX magazine to fit the rifle is considered manufacturing a prohibited 20-round magazine for the AR180
So in theory you could modify the MRX magazine to fit a different manual action rifle without issue, but if it also happens to fit a semi-auto you'd probably have a court case on your hands
3
u/Flat-Dark-Earth Big Bore Specialist Aug 03 '25
You can modify the gun to fit those Mags, never modify the magazine to fit the gun.
3
u/MostEnergeticSloth Aug 03 '25
You have to take the last round bolt catch out of the gun. Drive out the retaining pin with a hammer and punch, keep track of the spring if you ever want to install it again and presto.
1
u/Mammoth_Attention_59 Aug 04 '25
This is a great solution.
Folks over at Victory Ridge said you could shave down the spine a touch
1
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u/2016YamR6 Aug 03 '25
You can’t modify a mag, that’s why those fins are there - to stop it from going into anything else.
But there’s nothing that says you can’t modify the mag well on the gun. So you could make the receiver take the original mag if you really wanted.
However once the mag goes in the receiver it becomes illegal because it’s over capacity. So if you get caught with the two of them together shooting you’re in trouble. But separate they are ok.
2
u/Mammoth_Attention_59 Aug 03 '25
The mk2 Renegade was designed to accept the MRX magazines
I’ve seen people use them, and have seen people make posts about it
I’m more so after what those people did / advice on it to make it work
1
u/ekso69 Aug 03 '25
Is your receiver a MK2? I would call MRA directly and ask Darren.
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u/Mammoth_Attention_59 Aug 03 '25
Correct
Yeah I’ll shoot them a call!
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Aug 04 '25 edited Aug 19 '25
[deleted]
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u/Mammoth_Attention_59 Aug 04 '25
I figured it out - the back spine needs to match similar to a standard STANAG
Otherwise it engages the LRBHO
Someone also commented you could remove the LRBHO. So either option works!
2
Aug 04 '25
[deleted]
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u/Mammoth_Attention_59 Aug 04 '25
Modding the magazine this way doesn’t cause it to become a prohib device: 1. Magazine still works as intended for the rifle(s) it was designed for. I.e manual action rifles (which have no magazine capacity limit)
If you shave down the sides and now it fits a in a semi auto - big no no
The renegade has a modified mag well by design to fit these magazines
Long story short, both options are perfectly acceptable, I personally like the LRBHO, so I went with shaving the mag spine.
Feel free to pm me and I can send you a reference photo!
1
u/Defiant_Impact_1957 Jan 05 '26
"However once the mag goes in the receiver it becomes illegal because it’s over capacity. So if you get caught with the two of them together shooting you’re in trouble. But separate they are ok." yeah that's not true. if it were, it would be illegal to put 10 round pistol AR mags into semi auto AR mag guns, and it wasn't. it was literally spelled out on the RCMP's website that that scenario is fine.
1
u/2016YamR6 Jan 06 '26 edited Jan 06 '26
To my understanding they are two different things. LAR-15 mags don’t require any modifications to the rifles to work. The MRX mags are 20 rounds because bolt actions have no limit. And we are talking about modifying another guns mag well to take MRX mags that it wasn’t originally designed for. That part is not cut and dry like the LAR-15 mags, I don’t think there is anything saying you can modify a gun to take any size magazine you want.
1
u/Defiant_Impact_1957 Jan 08 '26 edited Jan 08 '26
They are not two different things. You are allowed to modify gun magwells. That's literally what a magwell adapter is. Those are perfectly legal. Mrx bison mags are legal to put in any gun that can physically accept them. Go read the RCMP website about it. It's plain as day
1
u/TheBulletBuddy Sep 18 '25
Did you ever end up trying these out? Curious about it as well
2
u/Mammoth_Attention_59 Oct 06 '25
I did yes
You need to shave down the spine of the mag or remove the last round bolt hold open in the gun!
Shoot me a message I can send you pictures
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u/FD4L Aug 03 '25
Im pretty sure you're allowed to altar mags however you like, as long as you're not reverting to a prohibited device by unpunning.
I understand that the renegade were designed to be compatible with bcl magazines. Maybe you could email MRA CS and ask them if they have any tips.
4
u/goobergoobies Aug 03 '25
No, you cannot modify a magazine to fit another gun. But you can modify the receiver to accept another type of mags
3
u/Mammoth_Attention_59 Aug 03 '25
People modded Ak mags to fit the t81
Should the magazine not be modified in a way that alters its original capacity / the capacity law applied to the rifle you trying to use it in, it should be legal?
Example: pinned 5 rounded to be used in a semi auto should be okay (5 round limit). The MRX magazine to be used in a semi auto is a no go.
^ in my head, I could be wrong
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u/TheeJoCanadian Aug 03 '25
Almost looks like you posted the wrong pic my guy.