A top-mounted bubble level for shooters who hate guessing.

The Vector Optics Flat GEN2 ACD Level is designed to help eliminate canting from your shooting setup by providing a clear, visible bubble level mounted directly to your scope rings. When properly installed, it lets you ensure your rifle is perfectly level before every shot—ideal for long-range accuracy and consistent performance.

Designed for 30mm and 34mm Vector Optics Scope Mounts
This ACD Level fits directly onto the top section of Vector Optics' 30mm and 34mm mounts using the included hardware kit. It may also be compatible with other brands, depending on thread type, but you’ll need to assess compatibility yourself and potentially source your own mounting hardware. Compatibility beyond Vector Optics is not guaranteed.

What's Included:

• Flat ACD Bubble Level – Helps reduce rifle cant and improves consistency in your shooting.

• Detachable Lanyard – Attach the level temporarily without mounting, ideal for checking level between different setups.

• Mounting Kit:

  • 2x 45mm long M4 screws

  • 2x 30mm mounting collars/extensions for installation on compatible scope mounts

Important Setup Notes: This product is only as precise as your setup. The accuracy of your results depends on how true your rifle is from rail to barrel, and how evenly your scope mounts have been machined. If there’s inconsistency in your rail or scope mount machining—or even slight misalignment from the scope rings themselves—it can introduce cant and skew the level. Always start by leveling the rifle itself, then the scope, and only then add the ACD bubble.

Also, when mounting to scope rings, keep in mind that the natural gap between the upper and lower halves of your rings may cause slight canting unless everything is evenly torqued and aligned. This is not a product defect—just a mechanical reality. ACD levels are tools to assist with precision, but they can’t correct poor installation or warped hardware.

Final Thoughts: If you're serious about keeping your rifle perfectly level, this is a smart addition to your rig—but as with all precision tools, it works best when paired with attention to detail during setup. Whether you're shooting off a bench or prone in the field, the Flat GEN2 ACD gives you that extra edge to ensure cant isn’t the weak link in your accuracy.