Henry supreme mag?

[u/Deizelpunk]

I just put a down payment on a Henry supreme 5.56 at my local gun store. I was under the impression that these magazines have to be pinned to 5 but my gun store employee said it's a 10 round limit which makes no sense to me. Is there some sort of loophole that he knows about and I don't? Or was he bullshitting / mistaken? Pic for attention.

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Regardless, what is the best magazine option for these things in Canada? All I'm going to be using it for is target shooting for now.

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Thanks In advance!

[u/LumberjackCDN]

We have these instock right now, i just checked a pmag to be safe and can confirm ar compatability. So crossmags which are for ar pistols will fit and 10 rd capacity