BT20-B: Bottom rail for Atlas Accuracy International pin

The BT20B Atlas Accuracy International Spigot bottom rail is the same rail found in the BT20 , but consists ONLY of the 1913 lower track. 

It sticks to the BT19 AAIS on the bottom and accepts any rail mounted bipod. 

It will also connect to many ARCA rail adapters currently on the market with the same 1.100" two-hole pattern to the ARCA rail and will accept any rail-mounted bipod.

It's the same track that's on ours TRG BT21 bracket And on the BT43 lever track . 

It will also stick to the ARCALOCK clamp .

Machined to Picatinny rail standards from 6061-T6 aluminum with a Mil-Spec Type III Class 2 finish. NO HARDWARE INCLUDED. 

Only available in black.

• Length: 1.60″
• Weight: 0.57 oz