Went with a Temple Audio Duo 24 for my FM9 and was able to bolt mount it with the Duo 24 holes lining up perfectly. Found the right screws on Amazon that fit perfectly (thanks to this video ) in the FM9 foot holes. Bolted the 4 foot corners and its a solid mount. The FM9 and Duo24 were a little too tall for the temple fly case so i had to remove the foam wedges on the sides, after that, perfect fit. May add LED lighting & wireless down the road. Link to the screws I used https://shorturl.at/uNS13