Checkman:

You'll probably want spare mags.

For shooting, don't bother with originals. Buy Mec-Gar mags and replace the springs with Wolff mag springs.

Magazine springs might just be the single most important factor in feeding reliability. Second being the mainspring. Replacing it is a bit tricky, but the method I cooked up made it pretty easy.

Balance between the mag springs and the mainspring is the key. Once you hit the sweet spot it's a home run.

Wish I never sold mine............................