My oh my. . . . . That is an early Deer Park R9. All original with the carbon fiber grip panels and the early magazines where the back of the mags were not sanded smooth but rather showed the weld marks and with the C.N.C'ed followers we were using then before we had a mold made, for quite some expense, and went with the mold injected plastic followers. It even has the original style magazine release. Newer models had a different style release to better grab the mags. Nice gun for sure.
Eric R.