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March 12, 2026RUGER MRK 4T 22/45 22LR 4.4″ 10RD BK
$530.12
RUGER MRK 4T 22/45 22LR 4.4″ 10RD BK
22 in stock
The Ruger Mark IV Rimfire Pistols have a simple, one-button takedown for quick and easy field stripping. A recessed button in the back of the frame allows the upper receiver to tilt up and off of the grip frame without the use of tools. The bolt simply slides out of the receiver and the barrel can be properly cleaned from chamber to muzzle. The MKIV includes other significant improvements such as a one-piece grip frame that is precision CNC-machined from a solid piece of aluminum alloy, an ambidextrous manual safety and a redesigned bolt stop for more ergonomic operation. The magazine drops free on release for faster reloads and a redesigned magazine disconnect safety prevents discharge when the magazine has been removed. Internal improvements include changes to the hammer, sear, bolt and firing pin for smoother, more reliable feeding. Specific features vary by model, but the legendary, one-piece barreled receiver and internal cylindrical bolt construction remain the same. The robust design ensures permanent sight-to-barrel alignment and higher accuracy potential than conventional moving-slide designs.
| UPC | 736676401499 |
|---|---|
| Manufacturer | Ruger / Sturm, Ruger & Co. |
| Manufacturer Part Number | 40149 |
| Action | Semi-Auto |
| ATF Type | Pistol |
| Barrel Length | 4.4" |
| Caliber/Gauge | .22 LR |
| Capacity | 10 |
| Length | 12.3500 |
| Model | Mark IV |
| Mount Type | Picatinny Rail |
| Number of Magazines | 2 |
| Package Height | 3.7 |
| Package Width | 10.2 |
| Product Type | Pistol |
| Rate of Twist | 1-in-16" |
| Safety | Ambidextrous Manual |
| Shipping Weight | 3.7 |
| Sights | Adjustable Rear Sight |
| Sights Type | Contrast |
| Slide Description | Blued Steel |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| Thread Pattern | 1/2"-28 tpi |
| Units per Box | 1 |






