This is the "prototype" MINI MAG model 1. I made a few MINI MAGS several years ago that had G10 grips.I think there's only 1 out there, but possibly two.I never really persued the design any further and just recently decided to come out with a NEW an improved version. This knife is made of CPM 154 stainless and comes with a kydex rig with belt loop attachment. This knife is stamped "prototype" on the back side next to the model number. The allen bolt is the locking point within the sheath.