The Ruger Mark IV 22/45 Tactical is a single-action semi-automatic pistol chambered in .22 LR. It holds 10+1 rounds. The polymer frame with black finish pairs with a blued steel slide. Barrel length is 4.4 inches, overall length is 8.5 inches, and weight is 33.3 oz (2.08 lbs). Sights are a fixed front with adjustable rear. The ambidextrous manual safety is standard. The frame incorporates top and bottom Picatinny rails for mounting lights, lasers, or optics. 
 

Key Specifications 

• Brand: Ruger 
• Model Name: Mark IV 22/45 Tactical 
• Caliber: .22 LR 
• Action Type: Semi-Automatic (Single Action) 
• Capacity: 10+1 rounds 
• Barrel Length: 4.4 inches 
• Overall Length: 8.5 inches 
• Weight: 33.3 oz (2.08 lbs) 
• Frame Material: Polymer with Black Finish 
• Slide Material & Finish: Steel, Blued 
• Sights: Fixed Front / Adjustable Rear 
• Safety Type: Ambidextrous Manual Safety 
   

Detailed Features 

The 22/45 frame design mirrors the grip angle and feel of a 1911, which makes it popular for dry-fire practice or for shooters transitioning from a 1911-platform pistol. The threaded barrel accepts suppressors or compensators directly. Checkered 1911-style grip panels provide a secure hold. The Mark IV's most practical design improvement over previous generations is the one-button takedown — the entire action disassembles without tools for cleaning. 
 

Usage Scenarios 

1. Target Shooting: Adjustable rear sight and light .22 LR recoil suit paper and steel targets at range distances. 
2. 1911 Training: The frame geometry closely replicates 1911 handling for dry-fire and live-fire fundamentals practice. 
3. Suppressor Host: The threaded barrel is sized for standard .22 LR suppressors.

The Mark IV 22/45 Tactical is well-regarded for accuracy and the improved one-button takedown that makes cleaning straightforward compared to earlier Mark series pistols.

The 22/45 grip angle gets consistent positive feedback from 1911 shooters who want a low-cost practice platform. The feel in hand is frequently described as natural for anyone familiar with that platform.

Reliability is generally good, though a handful of users report occasional magazine feeding or ejection issues. These appear to be minority experiences and are often resolved through proper technique or adjusting ammo selection.

Weight relative to other .22 LR pistols comes up occasionally as a point of comparison, with some buyers noting heavier alternatives exist. The price is also discussed; the Mark IV sits above budget-tier .22 LR options, which prompts some deliberation among buyers comparing value.