No, but I used the 10 rounder for my P32 ... Untill the spring broke into 3 pieces from normal range use... and KT refused to replace it, telling me to PAY for a new one off their website instead.
'Cause they're listed on the 'Accessories' page for the P3AT on the Kel-Tec site?
P3AT-37 9rnd Magazine | Kel-Tec
Kel tech are awesome IMO. I've always had good luck.
Wow. That sucks. Maybe the design is better for the .380? No issues with mine.
The design is the same. BTW - my magazine worked flawlessly out of the box as well. I had fired it before on several ocasions. I wanted it fiixed - the only issue it had was the spring failing prematurely (probably 100 rounds through it). The first time it ever malfunctioned I took it home and dissasembled it for cleaning ... And the spring came out in 3 pieces. The largest piece is roughly the size of the standard 7 round spring - and guess what? The mag still works with that largest segmant, so long as you only load 5 or 6 rounds in it.
There is nothing wrong with the magazine body or extension - but there sure is something wrong with KT customer service. I have purchased multiple firearms from them, and the turds wont even spot me a spring, when they are the ones who supplied me with a defective product.
Here is the spring in question (Those are CZ 75 mags, I was shooting multiple pistols that day):