Magpul Mag Assist
 

where is the best place to buy these? I want to reduce my cost as much as I can - I would be looking for atleast 6 of them. I have seen them on Amazon and Ebay of course, but would prefer keeing it Canadian you know. Any direction would be greatly appreciated.

Airsoft depot has them.

Thanks man - I appreciate that - will check it out when I get home from work - their site is blocked from my PC

If you really really wanna lower your costs, use duct tape. Works almost as well (albeit ugly).