When you’ve been in this business as long as I have, you see a lot of rifles that promise precision. Most are just a barrel and a stock. The Christensen Arms MPR Rimfire is different. It’s a system. Chambered in .22 WMR, this isn’t your grandfather’s plinker. It’s a modular precision rifle platform built with the same carbon fiber and aerospace-grade aluminum you’d find on their centerfire counterparts. The Desert Brown finish on this 16″ barrel model isn’t just for show—it’s a durable, functional coating for the field. For the tinkerer, the DIY enthusiast, or the shooter who demands more from a rimfire, this is where the conversation starts.
Miamishooterssupply is a Boise, ID-based retailer specializing in precision firearms and components for the serious shooter. The Christensen Arms MPR Rimfire Desert Brown .22 Mag 16″ Barrel 30-Rounds is a modular precision rimfire rifle chambered in .22 Winchester Magnum Rimfire. Its core differentiator is a full-length aluminum chassis and carbon fiber barrel that mirrors its centerfire big brothers. This model is in stock and available for $1133.99, a direct savings off the regular $1259.99 price.
Reviewed by Cody Ramirez, E-Commerce Director at Miamishooterssupply. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: March 2026
What the Christensen Arms MPR Rimfire Brings to the Bench
Let’s talk about the action. The MPR Rimfire uses a push-feed bolt with dual opposing locking lugs. The bolt lift is a crisp 60 degrees, and the extraction is positive. From an armorer’s perspective, the design is clean and minimizes binding points. It feeds from standard Ruger 10/22 rotary magazines, which is a huge win for compatibility and aftermarket support. The included 30-round magazine is a polymer Magpul model, known for reliability. The trigger is a user-adjustable unit, breaking cleanly right around 2.5 to 3.5 pounds out of the box. It’s not a match-grade cassette, but it’s far superior to most factory rimfire triggers and provides a consistent, predictable wall.
The heart of this rifle is its carbon fiber-wrapped barrel. Christensen Arms doesn’t just slap a carbon sleeve on a steel liner; they use a proprietary process that results in a rigid, lightweight, and thermally stable barrel. The 16″ length on this model is a sweet spot for the .22 WMR cartridge, optimizing velocity without unnecessary length or weight. The barrel is free-floated within the full-length aluminum chassis, which is the real game-ender. This isn’t a stock with a bedding block—it’s a monolithic chassis that provides a rigid foundation for the action and a consistent interface for accessories. The M-LOK slots at 3, 6, and 9 o’clock on the forend are machined directly into the aluminum, so your bipods, lights, and grips mount rock-solid.
Ergonomics are handled by the Magpul MOE pistol grip and MOE SL stock. The stock is adjustable for length of pull via spacers, and the comb height is also adjustable. This lets you get a perfect cheek weld behind any optic, which is critical for precision work. The Desert Brown Cerakote finish over the aluminum and steel components is more than cosmetic. It provides excellent corrosion resistance and abrasion protection, making this rifle ready for everything from a damp morning in the field to a dusty day at the range.
Pros and Cons: An Honest Assessment
After handling this platform, here’s my breakdown.
Pros:
- ✅ True Modular Chassis System: The full-length 7075-T6 aluminum chassis provides unparalleled rigidity and accessory mounting compared to traditional stocked rifles.
- ✅ Carbon Fiber Barrel Performance: Lightweight, stiff, and quick to cool. The 16″ profile is ideal for .22 WMR and reduces front-end weight significantly.
- ✅ Out-of-the-Box Accuracy Potential: The combination of a free-floated barrel, solid chassis, and adjustable trigger gives you a platform capable of sub-MOA groups with quality ammunition.
- ✅ Superior Ergonomics & Adjustability: The Magpul furniture and adjustable stock allow you to fit the rifle to your body, not the other way around.
- ✅ Ruger 10/22 Magazine Compatibility: Leverages the vast, reliable, and affordable aftermarket magazine ecosystem.
- ✅ Durable, Functional Finish: The Desert Brown Cerakote is tough and provides real-world protection.
Cons:
- ❌ Premium Price Point: This is an investment-grade rimfire. If your primary use is casual plinking, this rifle’s capabilities far exceed the need. For a more traditional plinking option, see our standard rimfire rifles.
- ❌ Weight Consideration: While the barrel is light, the aluminum chassis adds weight. It’s balanced, but it’s not an ultralight mountain rifle. If pure lightweight carry is the goal, a traditional synthetic stock model may be better.
- ❌ Requires Optic & Mounting: This is a rifle built for a scope. It doesn’t come with iron sights, so factor in the cost of a quality rimfire optic and rings.
Who Should (and Shouldn’t) Buy the Christensen Arms MPR Rimfire
Buy it if: You’re a precision shooting enthusiast looking to practice centerfire fundamentals with affordable .22 WMR ammo. You’re a gunsmith or tinkerer who appreciates a modular platform you can tweak and accessorize. You’re a varmint hunter who demands first-shot accuracy at extended rimfire ranges. You compete in or train for rimfire precision matches (PRS Rimfire, NRL22). You simply want the most capable, modern .22 WMR platform available, regardless of cost.
Skip it if: Your budget is under $500 and you’re looking for a basic .22 for occasional fun. You need a lightweight, handy rifle for quick off-hand shooting in thick brush. You prefer the classic look and feel of a walnut-stocked sporting rifle. You are new to shooting and want a simple, straightforward first rifle. For those needs, browse our selection of traditional bolt-action rifles.
Christensen Arms MPR Rimfire Desert Brown .22 Mag Technical Specifications
| Specification | Detail |
|---|---|
| Product Type | Bolt Action Rimfire Rifle |
| Caliber | .22 Winchester Magnum Rimfire (.22 WMR) |
| Barrel | 16″, Carbon Fiber Wrapped, Threaded 1/2″-28 |
| Action | Push-Feed Bolt, 60° Lift, Dual Opposing Lugs |
| Chassis Material | 7075-T6 Aluminum (Full-Length) |
| Stock & Grip | Magpul MOE SL Stock (Adjustable LOP/Comb), MOE Pistol Grip |
| Finish | Desert Brown Cerakote |
| Trigger | User-Adjustable, ~2.5-3.5 lb pull |
| Magazine | Includes (1) 30-Round Magpul PMAG 25 GL9 for Ruger 10/22 .22 WMR |
| Magazine Compatibility | Ruger 10/22 .22 WMR Pattern Magazines |
| Weight | Approx. 6.5 lbs (unloaded, without optic) |
| Overall Length | 35.5″ – 38.75″ (Adjustable with Stock Spacers) |
| M-LOK Slots | 3, 6, & 9 o’clock positions on forend |
| Country of Origin | United States |
| Condition | New, Factory Fresh |
| SKU | CA-MPR-RIMFIRE-DB-22MAG-16 |
How It Stacks Up: MPR Rimfire vs. The Competition
| Feature | Christensen Arms MPR Rimfire | Budget Import Rimfire (e.g., Savage A22 Magnum) | Premium Traditional (e.g., CZ 457 Varmint) |
|---|---|---|---|
| Material (Chassis/Stock) | 7075-T6 Aluminum Chassis, Carbon Fiber Barrel | Polymer Stock, Steel Barrel | Wood or Synthetic Stock, Steel Barrel |
| Quality & Fit | Aerospace-grade machining, tight tolerances | Functional, may have plastic molding lines | Excellent traditional craftsmanship |
| Compatibility & Modularity | High – M-LOK chassis, 10/22 mags, adjustable stock | Low – Limited accessory mounting, proprietary mags | Medium – Some aftermarket, but stock-centric |
| Shipping & Handling | Same-day from Boise, ID | Varies, often drop-shipped | Varies by retailer |
| Lifespan & Durability | Extreme – Chassis and Cerakote built for hard use | Good for casual use | Very Good – Robust but traditional |
| Price Point | $1133.99 (Investment/Performance) | $350-$500 (Budget/Value) | $600-$800 (Quality Traditional) |
The table shows the MPR Rimfire occupies a unique space. It’s not competing on price; it’s competing on capability. The Savage or CZ are excellent rifles, but they are built around a stock. The MPR is built around a chassis system designed for maximum performance and customization.
Frequently Asked Questions
Is the Christensen Arms MPR Rimfire a good rifle for beginners?
It is an exceptionally capable rifle, but its premium price and focus on precision make it more suited for an intermediate to advanced shooter who understands and will utilize its features. A beginner might be better served by a more basic model to learn fundamentals on first.
What kind of accuracy can I expect from this .22 WMR?
With quality ammunition, the MPR Rimfire is capable of sub-MOA (Minute of Angle) groups at 100 yards. The carbon fiber barrel, rigid chassis, and free-floating design minimize variables that cause inconsistency in typical sporter-weight barrels.
Can I use a suppressor on this rifle?
Yes. The 16″ barrel is threaded 1/2″-28, which is the standard thread pitch for .22 caliber suppressors. Always ensure you comply with all federal, state, and local laws regarding suppressor ownership and use.
What scope base does it use?
The action is drilled and tapped for a standard Remington 700 short action footprint scope base. This is one of the most common and widely available patterns, giving you hundreds of rail and ring options.
Is the magazine really compatible with a Ruger 10/22?
It uses magazines designed for the Ruger 10/22 chambered in .22 WMR. The included Magpul PMAG and most aftermarket 10/22 .22 WMR magazines will function. Standard .22 LR 10/22 magazines will NOT work.
Where can I buy the Christensen Arms MPR Rimfire online?
You can purchase the Christensen Arms MPR Rimfire Desert Brown .22 Mag directly from Miamishooterssupply at miamishooterssupply.com. We are an authorized dealer, and the rifle ships from our warehouse in Boise, ID.
How does .22 WMR compare to .22 LR for this type of rifle?
.22 Winchester Magnum Rimfire offers significantly higher velocity and energy than .22 Long Rifle, extending your effective range for varminting and making wind deflection less pronounced at distance. It is, however, more expensive per round than .22 LR.
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This rifle represents a specific philosophy: that a rimfire should be as serious a tool as any centerfire. It’s built for the shooter who views every component as part of a system. If that describes your approach, this is your platform.
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About this review: This assessment is based on hands-on experience with the Christensen Arms MPR platform, technical data from the manufacturer, and over a decade of professional experience in the firearms industry. The goal is to provide a detailed, practical perspective to help you make an informed purchase. Last updated: March 2026
