Grayboe Universal Mini Chassis For Remington 700 Long Action Black

The Grayboe Universal Mini Chassis for Remington 700 Long Action gives you a modern, modular shooting platform built on a billet aluminum bedding block that anchors directly into compatible Grayboe stocks. If you're running a Remington 700 or 700 clone long action and want the flexibility of AICS magazine compatibility without permanent modifications, this chassis system lets you swap magazines and reconfigure your rifle quickly—no gunsmith required.

The Universal Mini Chassis (UMC) weighs just 14 ounces and is machined from T6 6061 billet aluminum, then finished in black cerakote or hard coat anodized Type III for durability in the field or at the range. It seats and locks into place with two provided screws, creating a rigid interface between action and stock. The design works with your rifle's factory trigger and safety, though some aftermarket triggers or rifles with large trigger hangers may need minor fitting. The real advantage here is magazine flexibility: the chassis accepts standard short AICS mags for short-action calibers and 3.850" length AICS mags for long-action rounds, and they click straight into the bottom with no additional bottom metal.

Grayboe designed the UMC to work exclusively with their compatible stocks—including the Flagstaff, Halo, and Core lines—so verify your stock is UMC-compatible before ordering. If you're building a precision long-range rifle, a competition shooter looking for modular gear, or just want to modernize an older 700, this chassis gives you repeatable accuracy and the kind of platform flexibility that used to require expensive custom work.

Key Features

• T6 6061 billet aluminum bedding block, lightweight at 14 ounces
• Black cerakote or hard coat anodized Type III finish for corrosion resistance
• Quick-change design with two provided anchor screws
• Accepts AICS magazines (short mags for short calibers, 3.850\" mags for long-action calibers)
• No bottom metal required
• Compatible with factory Remington 700 triggers and safeties
• Works exclusively with Grayboe UMC-compatible stocks

Specifications

Frequently Asked Questions

Will this chassis work with my Remington 700 short action?

No. The Grayboe Universal Mini Chassis is designed for Remington 700 and 700 clone long actions only. Grayboe makes separate chassis models for short-action rifles.

What stocks is this chassis compatible with?

The UMC is designed to work exclusively with Grayboe stocks that are marked as UMC-compatible. These include the Flagstaff, Halo, and Core stocks. Verify your stock is UMC-compatible before purchasing the chassis.

Do I need bottom metal to use AICS magazines?

No. One of the main features of the Universal Mini Chassis is that magazines click directly into the bottom of the UMC—no additional bottom metal is required.

Will my aftermarket trigger work with this chassis?

The chassis is compatible with Remington 700 factory triggers and safeties. Aftermarket triggers may require modification to fit properly, and rifles with large trigger hangers may need fitting as well. Contact Grayboe or a gunsmith if you have a specific trigger in mind.