USA mags seem to be a hit or miss deal. I bought four of them and three of them worked flawlessly, with the fourth needing a feed lip persuaded
into the correct position. After the tree line counseling session, all four mags are 100%. Some folks haven't been that lucky. Good luck.
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May your lead always hit center mass and your brass always land in your range bag.
~Blades~
Guns cause crime like spoons cause Rosie O'Donnell to be fat!