The ARCALOCK Spigot Extension was designed for Area 419's ARCALOCK clamp and any ARMS17-S accessory with matching hole pattern of 1.100”.

It is ideal to adapt the BT35-NC 5-H Atlas Bipod to an ARCA clamp for clearance of the cradle and operation of the clamp's knob. It will also extend all "NC" or No Clamp models (BT10-NC, BT46-NC, BT47-NC, BT35-NC, BT65-NC, BT69-NC, BT72-NC) of Atlas Bipods out extra 1.25″ for increased stability. To use with your Bipod that already has an ADM-170-S Clamp, simply remove the clamp to attach the spigot.

This spigot Includes two 10-32 x 3/8" flathead socket screws and two 10-32 x 5/8" flathead socket screws.