Description
The Atlas BT20-B AAIS Bottom Rail is the same rail found in the BT20 kit, but consists of the bottom 1913 rail ONLY that can be attached to the AAIS BT19 (123133 sold separately) on the bottom at the 6 o’clock position. This allows mounting of the BT10 or BT10-LW17 to the AAIS BT19. This rail…
