This is a Accu-Tac Part known as the Picatinny Rail Mount, model PRM-100.
Use the two 10-32 x 1.25" bolts to mount to any stock that has a 48mm bolt span such as some Rem 700 stocks" or you can use the two wood/metal screws to mount it to any wood or plastic stock. You can use one of each style screw if desired or necessary. The Accu-Tac picatinny rail mount is designed specifically for its bipod line. It is cnc machined" and coated with mil-spec hard anodize. Each rail also includes the necessary hardware for installation.
Features:
Attaches to stocks with 48mm bolt span
CNC machined
hard anodize coating
