Atlas Precision BT46-NC PSR Bipod The BT46-NC PSR (Precision Sniper Rifle) Atlas Bipod "No Clamp" model has a two hole pattern of 1.100” with the holes being 10/32 threads. It requires any 17S size lever style mount to include the ADM-170-S, ARMS 17S, TRAMP from Badger Ordnance, LT271... See More