I have one, I too had to search for one available separately for quite awhile. It doesn't match my Ramline stock though...the material seems different. Unfortunately the PO did a job filing it down...I think perhaps to avoid removing the pin and instead jamming it in after making it too short for a tight fit.
To indulge you with a view of a not so functional one on wood...I did a mock up for ya.
I think it looks a little odd, and I have yet to find a combination of poly stock and this handguard that I find appealing. The plastic seems to match the ATI stocks more than any other oddly.