I just picked up the subject firearm, used. It's a very nice shooter. I enjoy shooting it. However, I do not care for the magazine release. Also, occasionally, when inserting a loaded magazine firmly with the palm of my hand whilst the slide is back, it will go into battery. Just wondering if anybody else has experienced this? Also, Magazines are pricey, and not very available. Will a 20 round magazine for the full size function in this gun? I found some that are available at a "reasonable" price.. I realize it will stick out, just want to be sure it will function before I purchase. A couple of those would be great for my range. Thanks very much.