I finally got to the range today at lunch and put about 200 rounds through the new shield. I shot Blazer 165gr and Winchester white box 180 gr through both the 7 and 6 round mags without a hitch. I was a little concerned about the 6 rounder because I have big hands but it shot beautifully with both. I just placed my pinky finger under the magazine and it worked great. It does have some zip to it but not so much it's not manageable. Here are the first 13 rounds I out down range at 6 yards.
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Overall I am very pleased with its performance. I will be replacing the standard sights with some XS big dots soon but other than that, great purchase as far as I am concerned!