Ruger Mark IV 22/45 5.5″ Bull Barrel Blued 10rd

The Ruger Mark IV 22/45 pairs the Mark IV action with a 5.50" bull barrel and a blued finish. It is chambered in .22 LR with a standard 10-round capacity and ships with two 10‑round magazines. The design retains a simple one‑button takedown and a drilled-and-tapped receiver for mounting optics.

Key Specifications

• The caliber is .22 LR.
• The standard capacity is 10 rounds.
• The barrel length is 5.50 inches.
• The barrel style is a bull barrel.
• The finish is blued.
• The sighting system is a fixed front and adjustable rear sight.
• This model includes two 10-round magazines.
• The listed weight is 34.4 ounces.
• The overall length is 9.75 inches.
• The receiver is drilled and tapped for Weaver- or Picatinny-style optics and lists a Picatinny footprint.

With a heavy-contour barrel, durable sight-to-barrel registration and straightforward field-stripping, the Mark IV 22/45 is designed for accurate rimfire performance and easy maintenance. Its combination of a stable barrel, optic-ready receiver and included magazines makes it practical for target shooting, range sessions, and precision rimfire applications.