The American Defense AD-B1 Modular Base is the smallest base in the American Defense modular lineup. It is designed to accept several different risers to accommodate a variety of uses. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the patent pending Auto Lock Lever system to accommodate both in spec and out of spec rail systems. The Auto Lock Lever System has the following advantages:
Does not require proprietary tools for adjustment
Can be adjusted with your finger or a flat blade screwdriver
Lever can be configured to lock to the front or the rear
Superior clamping surface to insure maximum rail engagement
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