http://www.nzhuntingandshooting.co.nz/f53/bi-pod-mounting-3498/
Bit different to what you asked but this is what i did to a couple of mine
Type: Posts; User: distant stalker
http://www.nzhuntingandshooting.co.nz/f53/bi-pod-mounting-3498/
Bit different to what you asked but this is what i did to a couple of mine