Magnum Research MR SwitchBolt 22 LR 18 in | SSL22UT

The Magnum Research MR SwitchBolt (SSL22UT) is an 18-inch, semi-automatic rimfire rifle configured for versatility and low-weight handling. It pairs an aluminum tensioned barrel with a threaded muzzle to accept suppressors or muzzle accessories and ships with a Luth-AR MCA-22 modular black stock and Picatinny rail. For an optic under $1,000 that complements the platform, consider a Vortex Crossfire II 2-7×32 for general-range accuracy and rimfire-friendly ballistics. Common applications include recreational plinking and small-game hunting.

Product Specifications

• The caliber is .22 LR as supplied by the manufacturer.
• The barrel length is 18 inches with a tensioned profile and threaded muzzle.
• The action is semi-automatic (Ultra Semi Auto Rimfire configuration).
• The stock is a Luth-AR MCA-22 modular chassis in black.
• The receiver is constructed from 6061-T6 aircraft aluminum.
• The rifle includes a Picatinny rail on the receiver for optics and accessories.
• The charging handle is mounted on the left side and can be switched to the right side.
• The magazine capacity is 10 + 1 rounds.
• The listed weight is 4.25 lbs for the standard configuration.
• The finish group for stock and receiver is Black.
• The barrel description is tensioned with a threaded muzzle for accessory compatibility.
• The model/part number is SSL22UT as used in manufacturer documentation.
• The product UPC is 761226090793.

The MR SwitchBolt SSL22UT is a lightweight, modular rimfire platform that balances handling and accessory capability. With a tensioned, threaded 18-inch barrel and a Picatinny-equipped aluminum receiver, it is configured for straightforward optics mounting and adaptable charging orientation. The Luth-AR MCA-22 chassis provides a modern ergonomic interface and the 10+1 capacity keeps weight low at approximately 4.25 pounds, making the rifle suitable for extended range sessions or field use where portability matters.