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Kastle Group FSM-154 FORTRESS™ Scope Mount

The Kastle Group FSM-154 FORTRESS™ Scope Mount is a premium precision optic mount engineered for shooters who demand uncompromising durability, repeatable accuracy, and modularity. Manufactured in the USA from 7075-T651 aluminum, the FSM-154 provides a 1.54-inch optical centerline with a 0 MOA cant, making it an excellent choice for precision rifles, duty carbines, and designated marksman platforms.

Designed around Kastle Group’s innovative FORTRESS™ mounting system, the FSM-154 features integrated KNEKT™ modular attachment slots, allowing users to expand their setup with compatible accessories while maintaining a rigid, lightweight mounting platform. Combined with Kastle’s Titanium K-CLAMP™ mounting technology, the FSM-154 delivers exceptional clamping force and return-to-zero performance under hard use.

Finished with a MIL-SPEC Type III hardcoat anodizing, every mount is built to withstand demanding environments while maintaining corrosion resistance and long-term durability.

Whether you’re building a precision rifle, competition gun, or professional-duty platform, the Kastle FSM-154 provides a rock-solid foundation for your LPVO or magnified optic.

Features

• 1.54″ Optical Centerline Height
• Zero MOA Cant
• Precision-machined from 7075-T651 Aluminum
• Titanium K-CLAMP™ mounting system
• Integrated KNEKT™ modular accessory interface
• Type III MIL-SPEC Hardcoat Anodized Finish
• Available in 30mm, 34mm and 35mm ring sizes
• Available Black (BLK) Flack Dark Earth (FDE) and Clear (CLR)
• Lightweight, rigid one-piece design
• 100% Made in the USA

Specifications

Why Choose the Kastle FSM-154?

The FSM-154 is built for shooters who want more than just a scope mount. Its combination of aerospace-grade materials, modular accessory compatibility, and precision machining makes it an outstanding option for professional users, competitors, hunters, and enthusiasts alike. With a robust one-piece construction and premium manufacturing standards, it offers the rigidity and repeatability needed to keep your optic securely mounted in demanding conditions.

Whether you’re outfitting an AR-15, AR-10, precision bolt gun, or another modern rifle platform, the Kastle Group FSM-154 FORTRESS™ Scope Mount delivers the reliability and performance expected from a top-tier American-made optic mount.