Machasm,
I use the same bipod mount on my Rapid 7 MKI. It fits snuggly onto the 400CC bottle, but I cannot see how it would/could fit onto a 280CC bottle that the MFR uses. The other option is to sweet talk one or two of the people on the BBS who can fabricate such items. Best of luck in finding what you're looking for.
Regards,
Gix.