This is a 13-round, factory magazine for the Springfield XD Mod.2 .45 ACP Pistol.
I recently purchased an xd mod 2 in 45 acp. I wanted to get a couple of extra mags, so I looked online and freaked out when I saw a $40+ price. After some searching I found this site and purchased 2 of these mags. I left them loaded for about a week to break in the springs and then shot around 100 rounds per mag. Each functioned perfectly and I'm very satisfied with these mags. i'd have no reservations about ordering more if I needed to from Sportsman Outdoor.