The Kastle Group FSM-DB35™ is a purpose-built diving board accessory designed to integrate with Kastle Group FORTRESS™ scope mounts and provide an additional 1913 Picatinny rail interface for mounting accessories around your primary optic.
Designed specifically for 35mm scope mounts, the FSM-DB35™ gives users additional real estate for mounting equipment such as lasers, illuminators, or other compatible Picatinny-mounted accessories without having to compromise the primary optic’s position.
Key Features
- Designed for 35mm scope mounts
- Adds a 1913 Picatinny rail interface
- Compatible with most LRF platforms
- Precision machined from 7075-T651 aluminum
- Type III MIL-SPEC hardcoat anodized
- Designed for the Kastle Group FORTRESS™ mounting ecosystem
- Available in multiple finish options
- 100% Made in the USA
- Backed by Kastle Group’s lifetime manufacturer warranty
Built for Modern Weapon Configurations
The FSM-DB35™ is designed for shooters who need additional accessory mounting space without adding a large, cumbersome accessory rail to their rifle.
The diving board configuration places the additional Picatinny rail where it can be used alongside the primary optic, making it particularly useful for integrating laser aiming modules and other accessories into a modern night vision setup.
By mounting accessories directly around the optic, the FSM-DB35™ helps keep the overall rifle configuration compact while giving the shooter more flexibility when positioning mission-critical equipment.
35mm Compatibility
The FSM-DB35™ is the 35mm version of Kastle Group’s FSM-DB diving board system. It is intended for use with compatible 35mm scope mounts and LRF platforms.
For users running a Kastle Group FORTRESS™ scope mount with a 35mm optic, the FSM-DB35™ provides a clean and purpose-built way to add Picatinny-mounted accessories to the system.
Construction & Durability
Like the rest of the FORTRESS™ ecosystem, the FSM-DB35™ is machined from 7075-T651 aluminum and finished with a Type III MIL-SPEC hardcoat anodized finish. This provides a lightweight yet durable platform designed to withstand the demands of serious rifle applications.
Kastle Group builds its mounting systems around standardized 1913 Picatinny rail compatibility, allowing users to integrate the mount with a wide range of modern weapon systems and accessories.
Specifications
- Model: FSM-DB35™
- Ring Size: 35mm
- Accessory Interface: 1913 Picatinny Rail
- Compatibility: Most LRF platforms
- Material: 7075-T651 Aluminum
- Finish: Type III MIL-SPEC Hardcoat Anodized
- Country of Manufacture: USA
- Warranty: Kastle Group Lifetime Manufacturer Warranty
Why Buy the Kastle Group FSM-DB35™ from Custom Night Vision?
The FSM-DB35™ is an ideal accessory for anyone building a modern rifle around a Kastle Group FORTRESS™ scope mount and looking for a clean way to integrate additional Picatinny-mounted equipment.
For night vision users, the ability to position a laser or other accessory around the optic can be especially valuable when configuring a rifle for passive aiming, IR illumination, and other low-light applications.
The FSM-DB35™ combines Kastle Group’s lightweight 7075-T651 aluminum construction, durable MIL-SPEC finish, and modular FORTRESS™ ecosystem into a compact accessory mounting solution.
Kastle Group FORTRESS™ | 35mm | 1913 Picatinny | Made in the USA
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