American Defense AD-B3 Full-Size ACOG QD Base

The American Defense AD-B3 is a modular quick-detach base made for full-size ACOG optics. It gives the larger ACOG footprint a dedicated mounting platform rather than using the smaller B2 base intended for Mini ACOG models. The mount is finished in black for a straightforward match with common optic and rail hardware.

Full-size ACOG compatibility is the defining point on the AD-B3. The quick-detach connection lets the optic remain fixed to its base when the complete assembly is removed from the host rail. That makes this model easy to distinguish from the AD-B2 family, where the physical fit is intended for smaller ACOG configurations.

This base is a direct choice for a full-size ACOG that needs American Defense quick-detach mounting. Keeping the footprint-specific base with the optic simplifies the comparison and avoids confusing Mini and full-size ACOG hardware. Browse more dedicated optic bases in optics and rangefinders.

• Fits full-size ACOG optics
• Quick-detach modular base
• Dedicated ACOG mounting platform
• Black finish