ProMag magazine bodies are constructed of high carbon heat-treated steel and TIG-welded for strength. The springs are precision wound using heat-treated chrome silicon wire. Bases and followers are injection molded from polymers selected for their durability. The result is quality, consistency, durability and reliability. 10 Round Magazine
Posted by Dewey Todd on 26th Aug 2015
I have 3 of these magazines. They all seat and feed fine using my Pro Mag 9mm magwell block. They only reason I gave it a 4 star is the springs are so tight I cannot load more than 5 rounds by hand. I bought a loader from 9mm ar and now I can load them in no time without tearing my thumb and fingers up. Fast shipping and a great company to buy from.
Posted by craig on 22nd Jan 2015
I am pretty happy with promag I am using a Hahn bottom loading mag well adaptor I purchased three of them one of them will hold the bolt open out the last round other two do not but not a big deal very well-made I did purchase a couple of metalform magazine 10 rounders that do not feed correctly so pro mag worked very well not one jam in a 100 rounds
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