Remington factory magazines are constructed from a lightweight magnesium based alloy, cast as one piece, ideal for demanding high volume use.
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Submitted By: Robert A. On 08/29/2013
These are 3rd gen mags. They can still be a little rough. Clean them out and remove any burrs, then get some dry lubricant in there before you start using them. If you do that, they should work great.
[4 of 5 Stars]