Quick Answer

The Kastle ACRO-226 is designed for optics that use the Aimpoint ACRO footprint, so any red dot with that mounting pattern will fit. It raises the optical centerline to 2.26 inches, which helps you get a faster, more heads-up sight picture. If your optic uses a different footprint, you'll need a separate adapter plate.

Which optics fit the Kastle ACRO-226?

The mount is built around the Aimpoint ACRO footprint. That means it accepts the Aimpoint ACRO P-1 and ACRO P-2, as well as other optics that use the same mounting pattern. If you're unsure, check your optic's manual or the manufacturer's specifications for the footprint.

What is the 2.26-inch optical centerline and why does it matter?

A 2.26-inch optical centerline is taller than standard low mounts. This height encourages a more upright head position, which can speed up target acquisition and make it easier to see your dot without burying your cheek into the stock. It's a popular setup for tactical and competition shooters who prioritize speed and situational awareness.

How does the Kastle ACRO-226 attach to a rifle?

The mount uses Titanium K-Clamp mounting technology and is compatible with M-LOK slots, so you can attach it directly to M-LOK handguards or rails. It's made from 7075-T651 aluminum with a Type III MIL SPEC hardcoat anodized finish, which adds durability. The mount is 100% made in the USA and weighs just 3.1 ounces.

Is the Kastle ACRO-226 worth it for your setup?

If you already own an ACRO-footprint optic and want a taller, more heads-up mount that's lightweight and rugged, the ACRO-226 is a solid choice. It's especially useful for rifles with M-LOK handguards where you want to mount the optic forward. However, if you prefer a lower profile or use a different footprint, you may need a different mount or an adapter.

ACRO-226 Fitment FAQ

Will my Aimpoint ACRO P-2 fit?

Yes, the ACRO P-2 uses the ACRO footprint and is directly compatible with the Kastle ACRO-226. Direct fit, no adapter needed.

Can I use a different red dot?

Only if it has the Aimpoint ACRO footprint. Other footprints require an adapter plate, which may affect height and stability. Check your optic's footprint before buying.

What tools do I need for installation?

You'll need a Torx or hex key (depending on the screws) and a torque wrench. Follow the manufacturer's torque specs for the mount and optic. Proper torque prevents loosening and damage.

Does the 2.26-inch height affect zeroing?

A taller mount changes your zero distance and holdovers. You'll need to re-zero after installation and may need to adjust your shooting technique. Always re-zero after changing mounts.

Kastle ACRO-226 at a Glance

  • Kastle ACRO-226: Aimpoint® ACRO™ Footprint Ensures compatibility with ACRO P-1, P-2, and other ACRO-footprint optics.
  • Kastle ACRO-226: 2.26” Optical Centerline Promotes a heads-up posture for faster target acquisition.
  • Kastle ACRO-226: Titanium K-Clamp™ Mounting Tech Provides a secure and durable attachment to your rail.
  • Kastle ACRO-226: Ambi M-LOK™ Compatible Mod Slots Allows mounting on either side of M-LOK handguards.