I searched in the past for a pistol grip setup for the bps 10 and didn't find anything either. I did find out Boyds makes a thumbhole stock for the bps 10 and I ordered one. The quality was very good but it wouldn't fit right, as it was made for post 98 build guns and mine was a 91. Browning changed the way the stock fits and mounts to the receiver on the 10 gauge after 98, like they did on the 3.5 12 gauge when they went from building them on the 10 gauge frame. I believe it could have been modified a bit with either a shim or some cutting and sanding to get it to fit. At the time I didn't feel like experimenting so I returned it. Might be an option for you if you have a post 98 gun. I think it was somewhere in the $60-70 range. Good luck in your quest! And........