The Christensen Arms MPR Rimfire (Christensen part no. 8011202301) is a bolt-action .22 LR rifle built around an 18-inch carbon fiber tension barrel and an aluminum chassis finished in a Desert Brown Cerakote with a bi-tone metal treatment. The longer barrel adds a bit more velocity and sight radius than the 16-inch versions in the lineup, while keeping the same lightweight chassis design. The folding stock adjusts for length of pull and comb height, and a TriggerTech trigger delivers a crisp, consistent pull. An FFT handguard adds M-LOK slots for lights, bipods, or other accessories, and the rifle feeds from a 10-round Ruger BX-1 pattern magazine, one of the most common rimfire magazine patterns on the market.

Key Specifications

• Chambered in .22 Long Rifle, the most affordable and versatile rimfire cartridge for practice and small game.
• Fitted with an 18-inch carbon fiber tension barrel, longer than other MPR Rimfire variants for extra velocity and sight radius.
• Finished in Desert Brown Cerakote with a bi-tone metal treatment.
• Feeds from a 10-round Ruger BX-1 pattern magazine, widely available and easy to find spares for.
• 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.
• 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.

Frequently Asked Questions

Why choose the 18-inch barrel over the 16-inch version? The extra 2 inches adds a bit more velocity and sight radius, at the cost of slightly more overall length.

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.

Buy the Christensen Arms MPR Rimfire .22 LR Rifle, 18-Inch

Get a bit more reach out of a rimfire trainer with an MPR Rimfire from Christensen Arms, finished in Desert Brown Cerakote. 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.