Grayboe - Universal Mini Chassis - Ruger American - LA *Clearance*

Clearance configuration: Right/Left Hand: Right Hand, Inlet (Rifle Model): Ruger American - Long Action

*Clearance* item. This listing is for the exact configuration shown above, sold as-is at clearance pricing while supplies last. Final sale.

Modular Rifle Chassis System Built Around the Grayboe UMC

The Grayboe UMC (Universal Mini Chassis) is a modular bedding system designed to bring chassis-level performance to traditional rifle stocks. Instead of replacing your entire stock with a full chassis, the UMC acts as a precision-machined internal chassis that allows your rifle to interface consistently across multiple Grayboe stock platforms.

Your action mounts directly to the UMC, and the UMC installs into compatible Grayboe stocks-creating a repeatable, rigid system that improves consistency while maintaining the ergonomics and weight profile preferred by hunters.

Multi-Platform Compatibility

The UMC is available for a wide range of popular bolt action receivers, making it a flexible solution for shooters running multiple rifles or calibers.

Supported platforms include:

• Remington 700 short and long action
• Ruger American short and long action
• Howa 1500 short and long action
• Tikka T3 short action
• Savage 110 short and long action
• Weatherby Vanguard short and long action

Each inlet is designed to provide precise fitment while allowing multiple rifles to be used within the same stock system.

True Plug-and-Play System

All UMC units share a common external interface, meaning any compatible UMC will fit any compatible Grayboe stock.

• Run multiple rifles in a single stock
• Swap between calibers or actions quickly
• Maintain consistent bedding and alignment

If a UMC exists for your rifle, it will integrate seamlessly into the system.

Interchangeable Stock System

The UMC is designed to work with Grayboe stocks such as the Phoenix 2, Flagstaff, Halo, Core, and Renegade 2, allowing shooters to configure their setup based on application.

• Use one stock across multiple rifles
• Swap rifles without re-bedding
• Adapt your setup for hunting or precision use

This creates a true modular rifle chassis system without the weight or complexity of a traditional chassis.

AICS Magazine Compatibility

The UMC eliminates the need for separate bottom metal by integrating direct magazine compatibility into the chassis.

• Accepts AICS pattern magazines
• No bottom metal required
• Supports standard short action and 3.850" long action magazines

This simplifies your build while maintaining reliability and flexibility.

Lightweight, Precision-Machined Construction

The UMC is machined from 6061-T6 billet aluminum and designed to maintain strength while minimizing weight.

• Approximate weight: 14 oz
• Hardcoat anodized Type III
• Rigid bedding interface for improved consistency

This makes it an ideal foundation for shooters seeking a lightweight rifle chassis system without sacrificing durability.

Optional Adjustable Magazine Release

An optional paddle-style magazine release lever allows fine-tuning of magazine position for optimal feeding.

• Up to .080" of vertical adjustment
• Improves reliability across different magazine types and calibers

Quick Change Installation

The system is designed for fast and repeatable installation.

• Secured to the stock with two screws
• Locks the rifle and chassis into place as a single unit
• Allows rapid changeover between setups

Why Choose the Grayboe UMC?

For shooters looking at a Remington 700 chassis, Ruger American chassis, or other bolt action upgrades, the UMC offers a different approach-one that prioritizes modularity, weight savings, and system flexibility.

It delivers:

• A true modular bedding system
• Multi-platform compatibility
• AICS magazine integration
• Lightweight, field-ready design