I know this gun and luxs very well, it's a American mag release. The PSP had the heal Euro mag release.
This is a excellent gun, well cared for and is not a re-furb.
I can personally vouch for both man and machine.
"Come a day there won't be room for naughty men like us to slip about at all. This job goes south, there well may not be another. So here is us, on the raggedy edge. Don't push me, and I won't push you."