Description
The BCM Lower 1/3 A/T Optic Mount is a low-profile mounting solution designed specifically for Trijicon MRO red dot sights. It uses BCM’s A/T (Angled Torque) clamp system to increase clamping force and maintain repeatable zero on a properly mounted optic. Constructed from billet material and finished per military specifications, the mount is intended for users who require a compact, snag‑free optic interface. Hardware includes a hardened steel alloy clamp and nut treated with a Nitride coating.
Key Specifications
- The mount fits Trijicon MRO optics for lower 1/3 co-witness installation.
- The model is specified as the A/T Optic Mount (Lower 1/3 configuration).
- The finish is hard coat anodized per Mil-A-8625F for corrosion and wear resistance.
- The base material is a 7075T6 billet construction.
- The clamp and nut are hardened with Nitride coating for durability.
- The mount employs a patented A/T (Angled Torque) clamp to increase clamping force at the Picatinny rail.
- The design features multiple integral recoil lugs to help preserve optic zero.
- The profile is low-profile and snag-free for streamlined use under accessories and covers.
- The product color is Black.
- Installation warning: do not exceed torque spec of 65 INCH/LBS.
Designed for reliability and repeatable performance, the BCM Lower 1/3 A/T Optic Mount provides a compact and secure interface for Trijicon MRO sights. Its billet construction, enhanced clamping system, and hardened hardware make it a practical choice for users seeking a durable, low-profile mount with strong retention and consistent alignment.







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