Description
The BT20-B Atlas Accuracy International Spigot Bottom Rail is the same rail found in the BT20, but consists of the bottom 1913 rail only. It attaches to the BT19 AAIS on the bottom and accepts any rail mounted bipod.
It is the same rail found on the BT21 TRG Bracket, BT43 Leveraged Rail and BT20-B/ARCALOCK Clamp. It will also attach to many ARCA rail adaptors currently on the market e.g. Area 419 with the same two hole pattern of 1.100” to the ARCA rail and accept any rail mounted bipod.
Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Mounted from the factory on to an AREA 419 ARCALOCK Clamp. The clamp works on all standard ARCA/1.5″ dovetail rails. It will bolt directly to any “NC” (No Clamp) style of Atlas Bipods (except the 5-H which requires Extension Spigot for compatibility). Compatible Atlas Bipod models listed below.
The ARCALOCK Clamp features a proprietary two-stage screw design. Both the Clamp and Knob are machined from 6061-T6 Aluminum with Type III Hardcoat black anodized Clamp and Knob. The screw is turned from 303 stainless steel.
