Ruger Mark IV 22/45 Collector’s Series .22 LR 5.5″ Threaded
About this product
What is the Ruger Mark IV 22/45 Collector's Series .22 LR 5.5" Threaded? This is a collector-grade rimfire pistol blending traditional aesthetics with modern suppressor-ready functionality. Featuring an engraved walnut grip and blued finish, it's designed for precision target shooting and display. Ruger's one-button takedown system allows for tool-free maintenance, while the threaded bull barrel accommodates muzzle devices.
What is the Ruger Mark IV 22/45 Collector's Series used for?
The Ruger Mark IV is primarily used for suppressed target shooting and collection display. Its 1/2x28 threaded barrel accepts industry-standard .22 LR suppressors like the SilencerCo Sparrow, while the engraved walnut grips and blued finish make it a standout display piece. The 34.4 oz weight provides stability for precision work, and the drilled-and-tapped receiver supports red dot optics installation.
How does the Ruger Mark IV 22/45 compare to the Browning Buck Mark Plus Vision?
The Ruger Mark IV outperforms the Browning Buck Mark Plus Vision in takedown simplicity and suppressor compatibility. While both feature threaded barrels, Ruger's one-button disassembly requires zero tools versus Browning's hex-key system, saving approximately 90 seconds per cleaning cycle. The Ruger's 5.5" bull barrel provides slightly better harmonic damping than Browning's 5.5" tapered barrel, though both deliver sub-2" groups at 25 yards with match ammunition.
What does it weigh and what are the dimensions?
The pistol weighs 34.4 ounces (975 grams) with an overall length of 9.75 inches. Barrel length measures exactly 5.5 inches with 0.75 inches of threaded portion, while grip width spans 1.25 inches at its widest point. The 10-round magazine capacity keeps it compliant in restrictive jurisdictions while maintaining practical range utility.
Who is this NOT for?
This pistol is not for high-volume plinkers seeking minimalist maintenance. The blued finish requires regular oiling to prevent corrosion, adding 5-10 minutes weekly to maintenance routines compared to stainless or nitride finishes. Collectors preferring historical accuracy should note the modern takedown mechanism differs from earlier Mark series designs, making it less suitable for period-correct displays (learn about finish care).
What's in the box?
The package includes two 10-round magazines, thread protector, and owner's manual. Unlike some competitors, no optic mount plates or locking devices are included, requiring additional purchases for red dot installation or secure storage. Magazine capacity is intentionally limited for compliance, though higher-capacity options exist for other platforms.
Is the Ruger Mark IV worth it at $449.99?
At $449.99, this pistol delivers fair value for collectors and suppressed shooting enthusiasts. The engraved walnut grips and blued finish typically add $75-100 over standard models, while the threaded barrel saves $150+ compared to aftermarket threading services. Budget-conscious plinkers might prefer the Stevens 334 rifle for lower cost-per-round, but this Ruger excels in niche applications.
Specs at a glance
Video review
Pros & cons
What works
- One-button takedown requires zero tools—90 seconds faster than Browning Buck Mark disassembly
- 34.4 oz weight provides 22% more stability than polymer-frame .22 pistols
- Threaded 5.5" bull barrel accepts suppressors without adapter rings
Trade-offs
- Blued finish requires weekly oiling—adds 5-10 minutes maintenance versus stainless steel
- No optic mount included—add $35-60 for Picatinny rail installation
- 10-round magazine capacity limited versus some states' 15-round allowances
Expert review
Key attributes
| upc | 736676401925 |
| manufacturer | Ruger / Sturm, Ruger & Co. |
| manufacturer part number | 40192 |
| action | Semi-Auto |
| atf type | Pistol |
| barrel length | 5.5" |
| caliber/gauge | .22 LR |
| capacity | 10 |
| color | Black |
| model | Mark IV |
| number of magazines | 2 10 rd. |
| package height | 3.5 |
| package width | 10.0 |
| product type | Single Action Only |
| safety | Ambidextrous |
| shipping weight | 3.7 |
| sights | Adjustable Rear Sight |
| sights type | ADJUSTABLE |
Frequently asked questions
- Is it compatible with SilencerCo suppressors?
- Yes, the 1/2x28 threads are industry standard for .22 LR suppressors. SilencerCo Sparrow and Omega 22 models thread directly onto the barrel without adapters. Always check suppressor alignment with alignment rods before firing.
- Does it fit standard holsters?
- No, the bull barrel and collector grip dimensions require custom holsters. Most Mark IV holsters will accommodate the frame, but the 5.5" barrel extends 1.25" beyond standard 4.5" models. Expect 2-3 week lead time for custom kydex.
- How long does shipping take?
- FFL shipments typically process within 3-5 business days after documentation verification. Ground shipping adds 4-7 days transit time depending on destination. Signature required upon delivery per ATF regulations.
- Can I return it if it doesn't fit my collection?
- Returns are accepted within 30 days for unfired specimens with original packaging. Fired firearms cannot be returned due to federal regulations. All returns require FFL reshipment at buyer's expense (~$45-75).
- Does this work with Tactical Solutions uppers?
- Yes, the Mark IV receiver accepts most aftermarket uppers. Tactical Solutions Pac-Lite barrels install in under 2 minutes with proper alignment. Ensure recoil spring guide compatibility—some aftermarket units require modified springs.