• Aimpoint® ACRO™ Footprint • 2.26" Optical Centerline Height • Titanium K-Clamp™ Mounting Technology • Ambi M-LOK™ Mod Slots • 7075-T6 Aluminum Construction • Type III MIL SPEC Hardcoat Anodized Finish • 100% Made in The U.S.A.
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Overview
The Kastle ACRO-226™ optic mount offers a 2.26" optical centerline height, which promotes a heads-up posture for faster target acquisition. This mount is designed for use with the Aimpoint® ACRO™ series and similar optics that utilize the same footprint. The ACRO-226™ features our titanium K-Clamp™ mounting technology and comes FORTRESS™ accessory-ready out of the box. Proudly made in America from 7075-T6 aluminum and type III MIL SPEC hardcoat anodized in 5 available finishes.
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Foundation of Excellence
Built for Performance
Machined in our facility using decades of aerospace and defense manufacturing experience, the KASTLE ACRO-226™ delivers precision and reliability. Built with input from military, law enforcement, and competitive shooters, this mount is designed for real-world use.
Extensive field testing across different environments proves the ACRO-226™ performs when it matters most. The 2.26" height provides the optimal shooting position for tactical applications.
Advanced Mounting System
The ACRO-226™ features our proprietary K-Clamp™ titanium mounting technology, delivering exceptional clamping force and stability on any MIL-STD-1913 Picatinny rail system while maintaining the lightweight characteristics essential for dynamic shooting applications.
Lifetime Warranty
We manufacture every component in-house to ensure quality control from start to finish. While others outsource production, we maintain complete control over manufacturing to deliver the precision and reliability you expect. That's why we back every mount with a lifetime warranty.
ACRO-226™ Optic Mount Product Compatibility
Compatible Optics - Aimpoint® ACRO™ Footprint
Works with all Aimpoint® ACRO™ footprint optics and other compatible models:
Mounts to any standard Picatinny rail using our K-Clamp™ system:
Any MIL-STD-1913 Picatinny rail system
ACRO-226™ Optic Mount Technical Specifications
Dimensions & Weight
Optical Centerline Height: 2.26" (57.4mm)
Overall Length: 2.85" (72.4mm)
Width: 1.85" (47.0mm)
Weight: 3.1 oz (87.9g) without optic
Rail Slots Required: 6 Picatinny slots
For users preferring Aimpoint® MICRO™ footprint optics, ourMICRO-226™ offers the same 2.26" height optimization.
Materials & Finish
Construction: 7075-T6 aluminum alloy
Finish: Type III MIL SPEC hardcoat anodized
Mounting Hardware: Titanium K-Clamp™ system
Torque Specification: 25 in-lbs
Environmental Testing
Temperature Range: -40°F to +160°F (-40°C to +71°C)
Salt Spray: 96-hour exposure per ASTM B117
Vibration: MIL-STD-810 compliant
Drop Test: 12-foot concrete surface impact tested
Zero Compromise
Every aspect of our process is approached with the highest level of detail to both form and function. We believe a superior product should perform impeccably and look equally impressive. In an era where production is often outsourced, our lineage in advanced in-house manufacturing shapes our steadfast commitment to precision, reliability, and unparalleled quality.
What is the difference between the ACRO-226™ and ACRO-193™?
The primary difference comes down to height. The ACRO-226™ sits higher at 2.26", which makes it easier to keep your head up while shooting. This means quicker target acquisition and better compatibility with night vision or communication gear. The ACRO-193™ sits at 1.93" – a solid middle ground that balances height, size, and performance. The ACRO-226™ also offers a bit more flexibility in configuration. Both models are built with the same high-quality materials and rock-solid mounting system.
Which height should I choose - 1.93" or 2.26"?
The 2.26" height is ideal for shooters who prefer a heads-up shooting position or need additional clearance for night vision devices. Choose 1.93"ACRO-193™ if you prefer a more compact profile.
What is the torque specification for installation?
The K-Clamp™ mounting system requires 25 in-lbs of torque. Over-torquing can damage the rail system or mount. Always use a quality torque wrench for installation.
Will this work with my specific optic?
The ACRO-226™ is designed for any optic with the Aimpoint® ACRO™ footprint pattern. Refer to our compatibility list above or contact our technical team for specific optic questions.
Can I use this mount with magnifiers?
Yes, the 2.26" height is compatible with most flip-to-side and flip-to-center 3x and 5x magnifiers designed for 2.26" height elevated optic positions. The additional height provides optimal clearance for magnifier operation.
Does this require any special tools for installation?
Installation requires only a T25 Torx bit (included) and a torque wrench capable of 25 in-lbs. All necessary hardware is included.
How does the K-Clamp™ technology work?
Our patent-pending K-Clamp™ utilizes titanium components to distribute clamping force evenly across the Picatinny rail, preventing rail deformation while ensuring return-to-zero capability. The entire Kastle mount recesses down into the picatinny rail giving you a proprietary two point recoil lug system optimized at the front and rear of the mount.
What's the difference between Type III anodizing and standard finishes?
Type III MIL SPEC hardcoat anodizing provides superior corrosion resistance and surface hardness compared to standard Type II finishes, ensuring long-term durability in harsh environments.
Can this mount handle full-auto fire?
Absolutely. The ACRO-226™ has been tested extensively with full-automatic select fire weapons systems and maintains zero under extreme conditions.
What's the expected lifespan of this mount?
With proper installation and normal use, the ACRO-226™ is designed for indefinite service life. That's why we back it with our lifetime warranty.
Which color should I choose?
Color choice is primarily aesthetic and operational preference:
Black
FDE
Desert Sand
Clear
OD Green
Can I have this mount custom Cerakoted?
Yes, order in "Clear" finish for custom Cerakote applications.
What does the lifetime warranty cover?
Our lifetime warranty covers defects in materials and workmanship for the original purchaser. Normal wear, abuse, and modifications are not covered.
What if I need technical support?
Contact our technical team at comms@kastle.group or through our dealer network. Our team provides comprehensive installation and troubleshooting support.
Do you offer military or law enforcement discounts?
Yes, we support our nation's protectors.Contact us directly with valid credentials for pricing information.
When will this be back in stock?
We work to restock products as quickly as possible. Use the "Notify me when available" feature to receive immediate notification when inventory is restored.
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