Ruger Mark IV 22 45 22 LR 5 5IN Bull Blued 10RD
About this product
The Ruger Mark IV 22/45 is one of the most established .22 LR target and plinking pistols on the market, combining Ruger's proven Mark-series barrel and action with a 1911-style grip angle. This listing is the 5.5-inch bull-barrel, blued configuration with 10-round capacity.
What does "22/45" mean, and why does the grip angle matter?
The "45" in 22/45 refers to the pistol's 1911-pattern grip angle and magazine release location, which Ruger built specifically to feel familiar to shooters who train on 1911-pattern centerfire pistols. This makes the 22/45 a popular choice for dry-fire and low-cost live-fire practice that carries over to 1911 manual-of-arms muscle memory, in addition to being a capable target and plinking pistol on its own.
What are the 5.5-inch bull-barrel model's specs?
This configuration uses a 5.5-inch bull barrel — a heavier, non-tapered barrel profile that adds forward weight to reduce muzzle flip and improve accuracy — finished in blued steel. Overall length is about 9.75 inches, height 5.5 inches, and unloaded weight around 34.4 ounces. It holds 10 rounds of .22 LR per magazine and ships with two 10-round magazines. Sights are an adjustable rear paired with a fixed front, and the receiver is drilled and tapped for scope or red dot mounting.
What makes the Mark IV easier to maintain than earlier Mark-series pistols?
Ruger redesigned the Mark IV around a one-button takedown system that lets the barrel-receiver assembly tilt up and off the grip frame without tools — a major improvement over the notoriously fiddly disassembly process on earlier Mark I/II/III pistols. This makes routine cleaning, which .22 LR pistols need more frequently due to dirtier ammunition, dramatically simpler.
Who is this pistol best suited for?
The 22/45 bull-barrel model is aimed at target shooters, plinkers, and anyone building low-cost practice reps with a 1911-style grip feel. Ambidextrous manual safety and a magazine disconnect add to the beginner-friendly, range-focused design. It's not intended as a concealed-carry or defensive pistol — .22 LR is not typically recommended as a primary defensive caliber.
Is this pistol legal to buy in California, and how does it ship?
California's handgun roster and compliance requirements vary by exact model and barrel configuration, so confirm current California compliance for this 5.5-inch bull-barrel configuration with your FFL before ordering. As a firearm, it ships only to a licensed FFL dealer for transfer, background check, and any required waiting period.
How does the Mark IV fit into Ruger's rimfire pistol history?
Ruger's Standard/Mark-series pistols trace back to the original Ruger Standard model introduced in 1949, making this lineage one of the longest continuously produced pistol families in American manufacturing. The 22/45 variant, with its 1911-pattern grip module, was introduced later specifically to appeal to centerfire 1911 shooters looking for an affordable way to practice trigger control and sight picture without burning through costly centerfire ammunition, and the Mark IV generation carries that same mission forward with meaningfully easier maintenance. Decades of aftermarket support also mean holsters, magazine pouches, and optics mounts for the 22/45 pattern are widely available and inexpensive compared to newer pistol designs, and replacement parts are easy to source if the pistol ever needs service after years of heavy range use.
For dedicated range time, dry-fire-to-live-fire training, or simple plinking fun, the Mark IV 22/45 bull-barrel remains one of the most trusted .22 LR pistols available.
FFL transfer required
This item is a firearm and ships only to a licensed FFL dealer, never to a home address. At checkout, enter your preferred dealer as the shipping address, or leave it blank and we will assign a licensed dealer near you at no extra cost. You complete the background check and paperwork with the dealer when you pick up.
California buyers: handguns must be on the California roster for delivery to a California FFL, a Firearm Safety Certificate (FSC) and DROS are handled at the dealer, and the 10-day waiting period applies. Out-of-state buyers receive the firearm through their own local FFL under their state's rules.
Specs at a glance
Pros & cons
What works
- Heavy bull barrel improves accuracy and reduces muzzle flip
- 1911-pattern grip angle for training crossover
- Tool-free one-button takedown for easy cleaning
- Low-cost .22 LR range and plinking ammunition
Trade-offs
- .22 LR is not recommended as a primary defensive caliber
- Bull barrel adds weight versus tapered-barrel Mark IV models
- California roster compliance must be confirmed before ordering
Key attributes
| Transfer | Ships to your FFL dealer |
| Caliber | .22 LR |
| Capacity | 10+1 (two magazines included) |
| Barrel Length | 5.5 in bull barrel |
| Action | Semi-automatic, blowback |
| Finish | Blued steel |
Frequently asked questions
- What barrel length is this Mark IV 22/45?
- 5.5 inches, with a heavier bull-barrel profile.
- How many rounds does it hold?
- 10 rounds per magazine; it ships with two 10-round magazines.
- Why does it have a 1911-style grip angle?
- The 22/45 designation refers to its 1911-pattern grip angle and magazine release, aimed at shooters who train on 1911 pistols.
- Is takedown difficult like older Ruger Mark pistols?
- No — the Mark IV uses a tool-free, one-button takedown system that's much easier than earlier generations.
- Can this ship to my house in California?
- No. It ships to a licensed FFL dealer for transfer and background check.