The Christensen Arms MPR Rimfire (Christensen part no. 801-12020-00) is a bolt-action .22 LR rifle built around a 16-inch carbon fiber tension barrel and a black anodized aluminum chassis, giving rimfire shooters a scaled-down version of Christensen’s centerfire precision platform. The folding stock adjusts for length of pull and comb height, so the rifle fits a wide range of shooters and packs down small for storage or travel. A TriggerTech trigger delivers a crisp, consistent pull, while the FFT handguard adds M-LOK slots for lights, bipods, or other accessories. It feeds from a 10-round Ruger BX-1 pattern magazine, one of the most common rimfire magazine patterns on the market, so spares and aftermarket options are easy to find. Built for training, small game, and pure rimfire fun, the MPR Rimfire brings match-grade rigidity to a lightweight, low-cost-to-shoot platform.

Key Specifications

• Chambered in .22 Long Rifle, the most affordable and versatile rimfire cartridge for practice and small game.
• Fitted with a 16-inch carbon fiber tension barrel for reduced weight and consistent harmonics.
• Built on a black anodized aluminum chassis instead of a traditional wood or polymer stock.
• Features a folding stock with adjustable length of pull and comb height for a personalized, packable fit.
• Runs a TriggerTech trigger for a crisp, consistent pull.
• Includes an FFT handguard with M-LOK slots for mounting lights, bipods, or other accessories.
• Feeds from a 10-round Ruger BX-1 pattern magazine, widely available and easy to find spares for.
• Cut with a 1-in-16-inch twist, standard for stabilizing .22 LR bullet weights.
• Ships with no factory sights, keeping the receiver optics-ready.
• The overall length is 41.5 inches.

Frequently Asked Questions

Does it use a proprietary magazine? No, it feeds from the widely available Ruger BX-1 pattern 10/22 magazine, so spares and higher-capacity options are easy to find.

Can the stock be adjusted? Yes, the folding stock adjusts for both length of pull and comb height, and it folds for compact storage or transport.

Does it come with sights? No, it ships without sights, so it is ready for an optic through the included Picatinny rail.

Buy the Christensen Arms MPR Rimfire .22 LR Rifle

Train on centerfire-style precision without the centerfire cost with an MPR Rimfire from Christensen Arms. It pairs well with the rest of our bolt action rifles lineup. As a firearm, it ships from our Lubbock, Texas gun shop to your local FFL for transfer — reach out and we will have it moving as soon as it’s ready.