Atlas - Sako TRG Bracket (BT21) Cat 1 In that QC system the

In that QC system the plate which bolts on top of these 9-3/4″″ legs is called a “Quick Change Base Plate”

Size: 55mm x 3mm

This is due to the fact that traditional phosphor bronze brushes contain over 90% copper in their composition and will turn patches blue when in contact with most copper removing cleaners

the Back of the hand

Atlas - Sako TRG Bracket (BT21) Cat 1 In that QC system theThe BT21 Atlas TRG Bracket (ATB) is designed for use with the Sako TRG line of rifles that utilize the TRG bipod attachment slot with 0. 42 hole spacing. The ATB provides a forward mounting position which is also closer to the bore line. It is designed for use with either the 2 screw clamp (BT10, BT65, BT69, BT72) or quick detach lever (indicated by LW17) models of Atlas Bipods, which would mount directly to the Picatinny Rail portion of the ATB.