Originally Posted by ta2maki
Did some investigating. It's called the Pepperball PS-SA10, SA10, or SA-10NX.
Okay, so, I used this information, and I have a positive I.D. It is a Pepperball SA-10
The SA-10NX as ta2maki found IS based on an ACP as I suspected, and was developed as an "improvement" over the original design.
I am looking Up more information as we speak, and Im hoping to have more info soon.