Ruger Mark IV 22/45 Collector’s Series .22 LR 5.5″ Threaded

Description

The Ruger Mark IV 22/45 Collector’s Series .22 LR 5.5″ Threaded is a factory-built tribute to classic American pistol design, blending engraved walnut furniture with a deep blued finish and modern threaded barrel utility. Chambered in .22 LR for low-cost plinking and training, this semi-auto handgun features a 5.50-inch bull barrel with factory threading, Ruger’s one-button takedown for tool-free field stripping, and a drilled-and-tapped receiver ready for optics. It’s a range-ready shooter that also earns its place in a curated collection.

Specification	Detail
Manufacturer	Ruger
Model	Mark IV 22/45 Collector’s Series
Material	Steel barrel, aluminum frame, American walnut grip with engraving
Compatibility	.22 LR ammunition; standard Ruger Mark IV magazines and accessories
Finish	Blued steel
Weight	36 oz (per manufacturer specs)
Condition	New

Key Features

• Engraved American Walnut Grip — WHY IT MATTERS: This Collector’s Series grip adds museum-quality aesthetics without sacrificing ergonomics, giving you a shootable showpiece that feels as good as it looks.
• Threaded 5.50-Inch Bull Barrel — WHY IT MATTERS: Factory threading means you can mount a suppressor or compensator out of the box, turning a target pistol into a quiet trainer or competition-ready host.
• One-Button Takedown — WHY IT MATTERS: Ruger’s push-button system lets you field-strip the Mark IV in seconds with no tools, making cleaning and maintenance a breeze even after a long range session.
• Drilled-and-Tapped Receiver — WHY IT MATTERS: Adding a red dot or reflex sight is straightforward, so you can upgrade from iron sights to a precise aiming solution without gunsmithing.

Who It’s For

This pistol is built for the shooter who wants a reliable .22 LR that doubles as a conversation piece. It fits collectors who value engravings and blued finishes, range enthusiasts who need a threaded barrel for suppressor use, and anyone teaching new shooters on a soft-recoiling platform with an easy takedown. If you appreciate traditional lines but demand modern convenience like optics-ready capability, this Mark IV delivers.

Pros and Cons

• Pro: Factory-threaded bull barrel eliminates aftermarket adapter costs and ensures concentric threads for suppressor alignment.
• Pro: One-button takedown is genuinely tool-free — according to Ruger specs, it reduces field-strip time to under 10 seconds.
• Pro: Engraved walnut grip adds visual weight without adding bulk, making it a standout in any safe.
• Con: The blued finish requires more care than stainless or cerakote; it’s prone to rust if not oiled regularly, especially in humid environments.

Comparison

Feature	Ruger Mark IV 22/45 Collector’s	Zev Technologies OZ9	Agency Arms Syndicate
Caliber	.22 LR	9mm	9mm
Barrel Length	5.5″ threaded bull	4.5″ threaded	4.6″ threaded
Weight	36 oz	24 oz	26 oz
Frame Material	Aluminum	Polymer	Polymer
Grip	Engraved walnut	Polymer stippled	Polymer stippled
MSRP	$466.08	~$1,100	~$900
Best For	Collectors, suppressor hosts, training	Competition, duty	Competition, duty

FAQ

Is the Ruger Mark IV 22/45 Collector’s Series .22 LR 5.5″ Threaded compatible with a suppressor?

Yes. The 5.5-inch barrel is factory-threaded with 1/2×28 threads, the standard for .22 LR suppressors. You can mount a can directly without adapters. Ruger recommends checking your suppressor’s length and weight to avoid function issues.

What magazines does this pistol use?

It uses standard Ruger Mark IV 22/45 magazines, available in 10-round capacity. They drop free and load easily via the button on the side.

Can I mount a red dot without a gunsmith?

Yes. The receiver is drilled and tapped for a Weaver-style rail or direct-mount optics. A few screws and a screwdriver are all you need — no drilling or tapping required.

Is the engraved walnut grip replaceable?

Yes. The grip panels are held by two screws and can be swapped for aftermarket options. However, the Collector’s Series value lies in the original engraving, so many owners keep it stock.

How does the one-button takedown work?

Push the button at the rear of the receiver, pivot the barrel assembly forward, and lift it off. The entire process takes one hand and no tools. Reassembly is the reverse.

Last updated: April 2026

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Browse more semi-auto handguns in our Semi Auto Handguns collection, or explore .22 LR Pistols and Threaded Barrel Pistols for additional options.