The Magnum Research MR SwitchBolt 22 LR 17 in Carbon is a lightweight rimfire rifle built for fast handling and precision right out of the box. It pairs a left-side charging handle with a right-handed bolt, so you keep your trigger hand planted while cycling rounds. The 17-inch carbon-wrapped barrel keeps weight down and accuracy up, making this a solid pick for plinking, small-game hunting, or just burning through bricks of .22 LR at the range.
| Manufacturer | Magnum Research |
|---|---|
| Model | MR SwitchBolt |
| Material | 6061-T6 aluminum receiver, carbon-wrapped steel barrel |
| Compatibility | .22 LR, standard and high-velocity loads |
| Finish | Hard-coat anodized receiver, matte carbon barrel |
| Weight | Per manufacturer specs: approximately 3.5 lbs |
| Condition | New |
Key Features
- Left-side bolt handle — Why it matters: You can cycle the action without breaking your firing grip, which keeps your sights on target and speeds up follow-up shots.
- 17-inch carbon-wrapped barrel — Why it matters: The carbon weave reduces weight by nearly a third compared to a steel barrel of the same length, so you can carry it all day without fatigue.
- Integral Picatinny scope base — Why it matters: No separate rail to buy or mount; the receiver is already machined to accept rings, saving you time and ensuring a rock-solid optic mount.
- Hard-coat anodized 6061-T6 receiver — Why it matters: This finish resists scratches and corrosion far better than paint or standard anodizing, so the rifle looks good and holds up to rough use.
Who It’s For
This rifle fits new gun owners who want a lightweight, easy-to-shoot .22 for learning fundamentals. It also appeals to experienced shooters looking for a compact trainer that mimics the manual of arms of a full-size rifle. If you like tinkering, the SwitchBolt’s threaded barrel (1/2×28) accepts suppressors or muzzle brakes right from the factory.
Pros & Cons
- Pro: Ambidextrous-friendly bolt placement — lefties can charge without reaching over the top, and righties keep their hand on the grip.
- Pro: Under 4 pounds fully dressed, so it’s easy to pack on a hike or hand to a younger shooter.
- Con: The carbon barrel looks great but can heat up faster than a heavier steel barrel during rapid fire strings. For most .22 LR plinking, it’s a non-issue.
Comparison
| Feature | Magnum Research MR SwitchBolt | Zev Technologies Z22 | Agency Arms .22 LR |
|---|---|---|---|
| Barrel length | 17 in carbon | 16.5 in steel | 16 in steel |
| Weight | ~3.5 lbs | ~4.2 lbs | ~4.0 lbs |
| Bolt handle location | Left side | Standard right | Standard right |
| Scope base | Integral Picatinny | Separate rail | Separate rail |
| Price | $744.92 | ~$850 | ~$800 |
FAQ
Does the Magnum Research MR SwitchBolt come with a scope?
No, the rifle ships without optics. The integral Picatinny base accepts most standard rings, so you can mount your own red dot, LPVO, or traditional scope.
Can I use high-velocity .22 LR ammo in this rifle?
Yes. The SwitchBolt is designed to handle standard and high-velocity .22 LR loads. Stick with quality brands for best accuracy.
Is the barrel threaded?
Yes, the muzzle is threaded 1/2×28, so you can attach a suppressor, brake, or thread protector right out of the box.
What is the magazine capacity?
The MR SwitchBolt uses a 10-round rotary magazine. Aftermarket 15- and 25-round mags are also available from Magnum Research.
According to Magnum Research specs, the SwitchBolt’s carbon barrel is wrapped over a steel liner, giving you the stiffness of a heavy barrel without the weight. Over 2 million .22 LR rifles were sold in the U.S. last year, and rimfire remains the most popular training and plinking caliber nationwide.
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Browse more in Semi Auto Rifles | Rimfire Rifles | .22 LR
Last updated: April 2026
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