Valid from 1 May - 31 October 2025
Valid from 1 May - 31 October 2025
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Valid from 1 May - 31 October 2025
Mount your optic with confidence and precision. The Vortex Sport 30mm Single Cantilever Ring Mount is engineered to provide the perfect lower 1/3 co-witness height for AR-platform rifles, placing your optic at the ideal 40mm centerline height for rapid target acquisition while keeping your iron sights in play.
Made from aircraft-grade aluminum, this mount offers a strong yet lightweight platform that ensures consistent zero and long-term durability. The cantilever design pushes the optic forward, giving you improved eye relief and optimal positioning on flat-top rails—ideal for use with red dots or low-power variable optics (LPVOs).
Whether you're building out a lightweight AR setup or upgrading your current mount, the CM-304 delivers the rock-solid hold and streamlined profile you need.
30mm Ring Size – Compatible with 30mm tube optics
Cantilever Design – Provides additional forward offset for better eye relief
Lower 1/3 Co-Witness Height (40mm) – Perfect alignment for AR-15 platforms while retaining visibility of backup iron sights
Aircraft-Grade Aluminum Construction – Lightweight, tough, and corrosion-resistant
Picatinny Rail Compatible – Easily mounts to standard Picatinny or Weaver rails
Secure 2-Bolt Mounting System – Maintains zero under recoil and rough use
Tube Diameter: 30mm
Mount Type: Cantilever (Picatinny/Weaver)
Center Height: 40mm (Lower 1/3 Co-Witness)
Material: 6061-T6 Aluminum
Finish: Hard-Anodized Matte Black
Weight: Approx. 6.7 oz
Torque Specs:
Ring Screws: 15 in/lbs
Base Clamp Screws: 25–30 in/lbs
**Reliable, rugged, and built to perform—**the Vortex CM-304 Cantilever Mount is the smart choice for shooters who demand strength, simplicity, and perfect sight alignment every time.
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