This grip is in brand new condition. It is the newer model ARMS #23 quick detachable foward grip (throw lever) for the various rail systems like SIR's and RIS/RAS etc.
There is no major improvement over the older style- they are at the same angle. The newer style is just easier for ARMS to make. They don't have to cut into and modify the top of the plastic A2 grip to make it fit the throw-lever mount. The new style mount has a fatter ramp (all one piece, not a spacer) and they simply screw in the A2 grip. It gives about a 1/4 to 1/2 more vertical room for your hands than the older style.
Another good thing about the newer style is that you can easily swap out the plastic A2 grip for any AR type grip like Hogue, ErgoGrip, Tango Down, etc. The bad thing is that it doesn't fit my little hands as well as the older style.
I want to trade even for your OLD style 23. You pay to ship yours to me, and I pay to ship mine to you. No beat up/poor condition ones either please.
If for some reason IM doesn't work, list your email in a reply here and I'll contact you ASAP.