Vortex Cantilever 30 mm Single Ring (40 mm Lower 1/3 Co-Witness) MPN CM-304

Rail real estate matters on a modern AR setup. When you are running a red dot and a magnifier together, getting both pieces of hardware positioned correctly while still leaving room for backup iron sights requires some thoughtful mounting solutions. The Vortex Cantilever 30mm Single Ring is exactly the kind of practical solution that solves a real problem without overcomplicating your setup. It gives you the right mounting height, moves your optic forward for better positioning, and frees up rear rail space for the backup irons you want to keep accessible.

The whole point of the Vortex Cantilever mount is to create room on your rail that standard ring mounts unnecessarily eat up. When used with the VMX-3T magnifier and StrikeFire red dot sight together, this single ring pushes the red dot forward by approximately one inch and opens up rear rail space that your backup iron sights can now occupy. For AR shooters running a full combat or competition setup where every inch of rail matters, that freed-up space is genuinely useful.

The Vortex 30mm Cantilever mount delivers a lower one-third co-witness mounting height of 40mm. Lower one-third co-witness puts your iron sights in the lower portion of the red dot window, giving you a cleaner primary sight picture through the optic while keeping backup irons visible and accessible when you need them. For most AR-platform shooters, this is the preferred co-witness setup for daily use.

The Vortex scope mount works with most 30mm red dot sights, making it a versatile mounting option for a wide range of optic choices. The single-ring design keeps the overall package slim and lightweight without adding unnecessary hardware to your setup.

Find the Vortex Cantilever 30mm Single Ring right here at EuroOptic and get your red dot and magnifier setup optimized from front to back.