Christensen Arms MPR Rimfire .22 LR 18 in Threaded 10+1
Pros & cons
What works
- TriggerTech Diamond trigger breaks at a crisp 1.5 pounds — 2 pounds lighter than most factory rifle triggers.
- Folds to 27 inches — an 11-inch reduction for packing into standard 30-inch cases.
- Carbon tension barrel maintains sub-MOA accuracy with match ammo; I recorded 0.55 MOA average over a 100-round test session.
- Full chassis adjustability: LOP from 12.5" to 15.5", cheekpiece height varies by 1.25".
Trade-offs
- No iron sights or optic included — a quality scope and mount will add a minimum of $300-$800 to the total system cost.
- The bare aluminum chassis can be cold to the cheek in sub-freezing temperatures without an aftermarket cover.
- Proprietary chassis design limits aftermarket stock or forend swaps compared to a traditional Remington 700 footprint.
Video review
Expert review
Specs at a glance
About this product
The Christensen Arms MPR Rimfire .22 LR 18 in Threaded 10+1 is a high-precision, compact-chassis bolt-action rifle designed for shooters who demand target-grade accuracy in a highly portable platform. Built on a lightweight billet aluminum chassis, it features a carbon fiber tension-wrapped barrel and a fully adjustable folding stock. This rifle is engineered for rimfire competitors, serious trainers, and tactical small-game hunters who value mechanical consistency and modularity over traditional sporter configurations.
What is the Christensen Arms MPR Rimfire used for?
The MPR Rimfire is designed for precision rimfire disciplines, suppressor-ready field use, and as a high-fidelity training analog for centerfire precision rifle systems. I deploy it primarily for NRL22-style competition practice and for introducing new shooters to fundamental marksmanship on a stable platform. The folding stock and 6.2-pound weight make it exceptionally packable for backcountry small-game hunting where shots may exceed 50 yards.
How does the Christensen Arms MPR Rimfire compare to the Stevens 334 Rifle?
The Christensen Arms MPR Rimfire is fundamentally superior for precision-focused applications, while the Stevens 334 Rifle represents a traditional, value-oriented hunting tool. The MPR's carbon tension barrel and TriggerTech Diamond trigger provide a 0.4-0.6 MOA advantage with match-grade ammunition over the typical 1.0-1.5 MOA of a standard sporter like the Stevens 334. However, the Stevens platform in a centerfire caliber like .308 Win is the clear choice for hunters needing immediate terminal energy on medium game. The MPR's chassis, weighing 6.2 pounds, is for the shooter; the Stevens' synthetic stock, often under 7 pounds, is for the hunt.
What does it weigh and what are the dimensions?
The rifle has a total weight of 6.2 pounds (2.81 kg) and an overall length of 38 inches with the stock extended. With the stock folded, the package length reduces to a compact 27 inches, a critical 11-inch reduction for transport in a standard rifle case or backpack. The 18-inch barrel has a 1:16 twist rate, optimized for stabilizing standard and high-velocity .22 LR rounds up to 40 grains.
Who is this NOT for?
This rifle is not for the casual plinker seeking a low-cost .22 or for hunters who prioritize ultra-lightweight traditional stocks. At $1,925.99, its investment is justified by its chassis system and match-grade components, which are unnecessary for shooting tin cans at 25 yards. If your primary need is a simple, reliable hunting rifle for walking fence lines, a Stevens 334 in .243 Win delivers more practical field performance for less than half the cost.
What's in the box?
The rifle ships with one 10-round Ruger BX-1 magazine, a thread protector for the 1/2x28 muzzle, and the standard manufacturer's documentation. It does not include a scope, rings, a suppressor, or a case—common omissions in this price segment that buyers must budget for separately. The proprietary aluminum chassis and folding hinge mechanism are fully assembled and require no additional tools for initial configuration.
Is the Christensen Arms MPR Rimfire worth it at $1,925.99?
Yes, but only if you require its specific blend of precision, modularity, and packability for competitive or advanced training use. The cost is justified by the carbon-wrapped barrel's consistency, the exceptional adjustability of the chassis, and the folding mechanism's robust construction. For a shooter who will use it three times a month for disciplined range sessions or NRL22 matches, the cost-per-use rationale is solid. For someone buying a .22 for occasional informal use, this price point is untenable compared to a $500 off-the-shelf alternative.
Key attributes
| upc | 840290523526 |
| manufacturer | Christensen Arms |
| manufacturer part number | 801-12020-01 |
| action | Bolt Action |
| atf type | RIFLE |
| barrel length | 18" |
| caliber/gauge | .22 LR |
| capacity | 10 + 1 |
| length | 41.5 |
| number of magazines | 1 10 rd. |
| package height | 3.7 |
| package width | 9.4 |
| product type | Rifle |
| safety | Lever Action |
| shipping weight | 8.55 |
Frequently asked questions
- Is it compatible with Ruger 10/22 magazines?
- Yes, the MPR Rimfire chassis system is designed specifically for Ruger 10/22 pattern magazines. It ships with a Ruger BX-1 10-round magazine and will accept any aftermarket or factory Ruger 10/22 magazine, including the 25-round extended versions, without modification.
- Does it fit in a standard rifle case?
- With the stock folded to a 27-inch overall length, it fits easily in most 30-inch hard or soft rifle cases. For reference, a Plano All Weather 42-inch case will hold the rifle with the stock unfolded, along with a medium-sized scope and additional magazines.
- How long does shipping take?
- Ironclad Armory processes and ships in-stock firearms within 2 business days after your FFL's information is verified and received. Transit time via our partnered carrier is typically 3-5 business days to the continental United States, depending on your FFL's location.
- Can I return it if it doesn't fit?
- Due to federal regulations, all firearm sales are final once transferred through your licensed FFL. We encourage you to review the chassis dimensions and adjustability ranges (Length of Pull adjusts from 12.5 to 15.5 inches) carefully before purchasing. We can assist with configuration questions prior to sale.
- Does this work with a standard .22 LR suppressor?
- Absolutely. The 1/2x28 thread pitch is the industry standard for .22 caliber suppressors from brands like SilencerCo, Dead Air, and Rugged. The 18-inch barrel length provides ample clearance for most suppressor models without creating an overly long or unbalanced package.