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Geissele Automatics Super Precision ACOG Series Scope Mount (05-403B / 05-403S)
Product Description
The Geissele Automatics Super Precision ACOG Series Scope Mount is engineered specifically to interface with the legendary Trijicon 4x power ACOG optic series on AR-15 and M4 pattern rifles. Precision machined from a single solid billet of high-strength 7075-T6 aluminum, this mount replaces factory optic bases to deliver maximum structural rigidity, zero retention, and field durability under heavy operational stress.
Utilizing Geissele's updated nut and bolt clamping system, the mount secures to MIL-STD-1913 Picatinny rails with up to 2,800 pounds of clamping force. Four integral shear lugs engage the rail slots to absorb recoil impulse and prevent optic shift during rapid semi-automatic or fully automatic fire. Available in Type III Hardcoat Anodized Black and Geissele's proprietary Desert Dirt Color (DDC), the Super Precision ACOG mount provides a streamlined, lightweight optic mounting solution.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Direct fit for Trijicon 4x32 ACOG optics and standard ACOG footprint bases. Fits MIL-STD-1913 Picatinny rails. Not compatible with mini ACOG (1.5x, 2x, 3x) or 6x48 ACOG models.
- Verify host firearm is unloaded, safety engaged, and chamber verified clear before mounting.
- Attach the optic to the Geissele Super Precision mount body using original optic mounting screws, torquing to manufacturer specification.
- Position the mount onto the receiver's upper Picatinny rail, ensuring all four shear lugs seat completely within the rail slots.
- Push the mount forward toward the muzzle to seat shear lugs against recoil surfaces before tightening.
- Torque clamp nut fasteners to 20-25 in-lbs using a calibrated torque wrench.
- Perform zeroing and verify return-to-zero capability after initial live-fire grouping.
Key Features
- Single-Billet 7075-T6 Aluminum: Machined from a single block of aircraft-grade aluminum for structural integrity.
- Extreme Clamping Force: Improved nut-and-bolt clamping interface generates up to 2,800 lbs of rail clamping pressure.
- Four Shear Lugs: Integrated recoil lugs maximize surface contact and prevent movement under heavy recoil.
- Optic Optimization: Tailor-engineered footprint specifically for Trijicon 4x ACOG optic housings.
- Type III Hardcoat Finish: Corrosion and wear-resistant hardcoat anodizing available in Black and Desert Dirt Color (DDC).
Product Specifications
- Brand: Geissele Automatics
- Model/Series: Super Precision ACOG Series Scope Mount
- MPNs / SKUs: 05-403B (Black), 05-403S (Desert Dirt Color - DDC)
- UPCs: 817953020760 (Black), 817953020777 (DDC)
- Optic Compatibility: Trijicon 4x32 ACOG Optics (Standard Footprint)
- Rail Mount Type: MIL-STD-1913 Picatinny Rail
- Material: 7075-T6 High-Strength Billet Aluminum
- Finish: Type III Hardcoat Anodized
- Weight: 3.17 oz
- Country of Origin: USA
