Limited run. Face of Bully and Kastle engraving.
Overview
The Kastle FRT-EXPS™ lower co-witness optic riser offers a 2.26″ optical centerline height, which promotes a heads-up posture for faster target acquisition. It is designed for use with the EOTECH™ EXPS series and similar optics. The FRT-EXPS™ features our patented titanium KastleClamp™ mounting technology. Proudly made in America from 7075-T651 aluminum and type III MIL SPEC hardcoat anodized in 4 available finishes.
Tough Framework
Machined in our own state of the art facility the FORTRESS™ series optic mounts boast the most rigid and durable designs on the market. These mounts were developed and created by shooters for shooters. We stand behind our product so strongly it is backed by our lifetime manufacturer warranty.
Open-Source Mounting
The Kastle™ Mount utilizes industry-standard Picatinny rail compatibility, allowing installation on almost all modern weapons systems.
Lifetime Warranty
Each KASTLE® FORTRESS™ series optic riser is covered by a Manufacturer’s Lifetime Warranty.
Kastle Group is a precision manufacturing company focused on producing premium optics mounting solutions engineered for hard-use applications. Built around a philosophy of durability, repeatability, and functional simplicity, Kastle Group designs mounts that provide secure optic retention under demanding real-world conditions, from professional use to extreme environmental exposure.
Kastle's designs are a product of feedback from warfighters, law enforcement professionals, and civilian enthusiasts combined with decades of experience in the aerospace and defense manufacturing industry. The company emphasizes tight machining tolerances, robust material selection, and practical engineering intended to maximize reliability without unnecessary complexity. Kastle Group mounts are designed to maintain zero through heavy recoil, sustained firing schedules, rough handling, and field use while still offering streamlined ergonomics and low-profile aesthetics.
We are proud to offer our own versions of Kastle's standard product lineup, engraved with Bully's face, as well as our own custom anodized colorways in Grape, Periwinkle, and Berry. With Kastle mounts, we appreciate that we don't need to choose between high strength, light weight, and clean aesthetics, when Kastle offers all three.
| Manufacturer | Kastle |
| Model | EXPS 226 OD GREEN |
| UPC | Piece of Mind x Kastle EXPS 226 OD GREEN |
| SKU | EXPS 226 OD GREEN |
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