American Defense AD-B2 Cantilever Lower 1/3 QD Mount for Mini ACOG Sights
Not Yet Rated | Write the First Review SKU: 222-AME-AD-B2-L-STD
UPC: 810104931304
MFG#: AD-B2-L-STD

American Defense AD-B2 Cantilever Lower 1/3 QD Mount for Mini ACOG Sights | Lock Fast. Aim True. Repeat.

Precision Mounting for Faster, Smarter Shooting.
Engineered for shooters who demand rock-solid performance with lightning-fast optic removal, the American Defense AD-B2 Cantilever Lower 1/3 QD Mount delivers perfect alignment, optimal co-witness, and repeat-zero reliability for your Trijicon Mini ACOG sight — every time.

Whether you're running a duty rifle, a defensive carbine, or a competition rig, this QD mount ensures your optic stays locked in under recoil, and snaps off instantly when needed. Designed for lower 1/3 co-witness, it enhances your iron sight visibility and helps you maintain rapid, intuitive target acquisition.

Built to Perform Under Pressure

• ✅ Lower 1/3 Co-Witness Height
  Elevates your optic just right for seamless sight picture alignment while retaining full visibility of your backup irons.

• ✅ Cantilever Design
  Pushes your Mini ACOG forward for ideal eye relief and improved rifle balance — especially beneficial on AR-platforms.

• ✅ QD Auto Lock™ Lever System
  American Defense’s patented locking system delivers glove-friendly, tool-free operation and 100% return-to-zero confidence.

• ✅ Precision Machined from 6061-T6 Aluminum
  Lightweight yet rugged — the same material trusted in aerospace and military hardware.

• ✅ Hardcoat Anodized Finish
  MIL-SPEC Type III anodizing protects against corrosion, wear, and field abuse.

Technical Specifications

Ideal Use Cases

• AR-15 / AR-10 Builds
• Tactical Patrol Rifles
• Defensive Setups with Backup Irons
• Competition and 3-Gun Configurations
• Users seeking flexibility between optics

Final Verdict

Don’t just mount your optic. Own the mount.
The American Defense AD-B2 Cantilever Lower 1/3 QD Mount is more than just hardware — it’s a force multiplier. Made in the USA, backed by a lifetime warranty, and trusted by professionals who count on their gear to perform when it matters most.