12-gauge pump-action shotgun with a box magazine?

[Phinehas]

I'm looking for a 12-gauge pump-action shotgun with a removable box magazine. I understand that there is no magazine size restriction for pump-action firearms, so the bigger the magazine the better. I'd like something with at least an eight round magazine, but twenty would be great. Do you know of anything like this? Any help would be appreciated.

 

[gallen270]

valtro PM-5's and dominon arms come to mind, but i think the mags are 6 rounders. a twenty round 12 gauge mag would be huge and heavy, and i havent seen any in canada.

 

[Epoch]

Well, the magazine only holds five rounds, but otherwise this looks good:

http://www.canadaammo.com/product.php?productid=20&cat=0&page=1