Christensen MPR Chassis SA - Precision Rifle Chassis System

The Christensen MPR Chassis SA is a precision rifle chassis system built on the same engineering found in Christensen Arms' Modern Precision Rifle platform. This modular aftermarket chassis lets you upgrade a Remington 700 footprint receiver—short or long action—into a purpose-built precision shooting machine without replacing the action itself. If you're building a long-range hunting rifle, setting up a match gun, or just want a more capable platform than a traditional stock, this chassis delivers adjustability and accuracy-focused design in a surprisingly lightweight package.

The chassis is built from 7075 billet aluminum and hand-finished in the USA. That foundation pairs with your choice of carbon fiber handguard—14" or 17" depending on your setup and how far forward you want to go. The result is a rigid, lightweight system that won't weigh down your rifle. At 3.3 to 3.5 pounds total, the chassis itself stays out of the way so you can focus on shooting.

Real-world adjustability makes the difference. The length of pull runs from 12.5" to 14.5", so whether you're shooting prone with body armor, in heavy winter gear, or in shirtsleeves at the range, you can dial in a comfortable cheek weld and trigger reach. The carbon fiber cheek riser adds another inch of vertical adjustment, letting you dial your scope height to match your natural head position and reduce fatigue during long sessions behind the gun.

This is the chassis component only—you'll need a Remington 700 short or long action receiver to complete the build. It's the foundation of a serious precision rifle, not a quick-swap stock.

Key Features

• Hand-finished 7075 billet aluminum construction for rigidity and longevity
• Lightweight platform at 3.3–3.5 lbs total weight
• Carbon fiber handguard in 14" or 17" lengths with integrated M-Lok slots for accessories
• Adjustable length of pull (12.5"–14.5") to fit your shooting position
• Adjustable carbon fiber cheek riser with 1" of vertical travel
• Built in the USA by Christensen Arms

Specifications

Frequently Asked Questions

Will this chassis work on my Remington 700?

The MPR Chassis SA is built for Remington 700 footprint receivers in both short action and long action. Verify your receiver type before ordering. This is a chassis component only—you'll need a compatible action to complete a rifle build.

What's the difference between the 14" and 17" handguard options?

Both use carbon fiber and M-Lok mounting. The 14" is more compact for hunting and general use; the 17" extends further forward, giving you more real estate for mounting accessories and a longer sight radius if you're running iron sights or split your scope setup.

Can I adjust the cheek riser and length of pull?

Yes to both. The length of pull adjusts from 12.5" to 14.5" to fit different shooting positions and gear. The carbon fiber cheek riser adds 1" of vertical adjustment so you can dial in your eye-to-scope relationship for a repeatable, comfortable cheek weld.

Is this a complete rifle or a component?

This is a chassis component. You'll need to pair it with a Remington 700 short or long action receiver, a barrel, bolt, and trigger group to build a complete rifle. The chassis itself is the foundation.