Ruger
Ruger Mark IV 22/45 Tactical 22 LR 4.4'' Barrel 10+1
736676401901 MPN: 40190 The Ruger Mark IV 22/45 Tactical, chambered in .22 LR, is a modern evolution of a legendary rimfire series that began with the original Ruger Standard in 1949. Known for its outstanding accuracy, the Mark IV owes its precision to a cold hammer-forged barrel with finely cut rifling and an internal cylindrical bolt design that maintains consistent sight-to-barrel alignment. The 22/45 Tactical model is optimized for versatility, featuring a threaded barrel for suppressors or muzzle devices, a durable blued finish, and an integrated Picatinny rail on the receiver for easy optic mounting. The upper receiver is drilled and tapped, giving shooters the flexibility to choose from a variety of rail or sight configurations. Designed with user-friendly features, the Mark IV includes enlarged bolt ears, a flared ejection port, and Ruger’s signature one-button takedown system—allowing for quick and simple disassembly and maintenance. Its grip frame is precision-molded polymer with a 1911-style grip angle, compatible with replaceable 1911 grip panels for a familiar feel and enhanced customization. Whether you're a recreational shooter or a serious rimfire enthusiast, the Ruger Mark IV 22/45 Tactical offers reliability, accuracy, and modularity in a well-balanced platform—making it an excellent choice for training, target shooting, or adding to your rimfire collection. FEATURES Simple, one-button takedown for quick and easy field-stripping and proper chamber-to-muzzle cleaning. Pressing a button in the back of the frame allows the barrel-receiver assembly to tilt up and off the grip frame without the use of tools. Comfortable, precision-molded polymer grip frame with a serrated frontstrap and checkered backstrap. 1/2"-28 threaded barrel with thread protector allows for the attachment of popular muzzle accessories. Cold hammer-forged barrel results in ultra-precise rifling that provides exceptional accuracy and longevity. Ergonomic bolt stop. Checkered, 1911-style grip panels for a great appearance and comfortable, non-slip hold. Internal cylindrical bolt construction ensures permanent sight-to-barrel alignment and higher accuracy potential than conventional moving-slide designs. Contoured ejection port and easy-to-grasp bolt ears allow for durable and reliable operation round after round. Factory-installed Picatinny rail for easy mounting of optics. Ambidextrous manual safety can be converted to left-side only with included washer. Features a conveniently located push-button magazine release on the left side of the frame. Magazine drops free on release for convenient reloading. Magazine disconnect prevents discharge when the magazine has been removed. Also includes: two, 10-round magazines. SPECIFICATIONS Manufacturer: Ruger Model: Mark IV 22/45 Tactical Caliber: 22LR MPN: 40190 UPC: 736676401901 Capacity: 10+1 Sights: Adjustable Rear, Fixed Front Barrel Length: 4.4" Threaded 1/2x28" Barrel Type: Cold hammer-forged steel, 1:16"RH Twist, 6 Grooves Weight: 2.08 lbs Overall Length: 8.5" Finish: Blued Grip: Checkered Synthetic WHAT'S IN THE BOX Ruger Mark IV 22/45 Tactical 22 LR Semi Auto Pistol (2) 10 Round Magazines Owners Manual Cable Lock
Specifications
Handgun Specs| Caliber | 22LR |
| Action | — |
| Magazine Capacity | 10+1 |
| Barrel Length | 4.4" Threaded 1/2x28" |
| Overall Length | 8.5" |
| Weight | 2.08 lbs |
| Frame Material | — |
| Sights | Adjustable Rear, Fixed Front |
| Safety | — |
| 1 2 | 28 threaded barrel with thread protector allows for the attachment of popular muzzle accessories. |
| Also Includes | two, 10-round magazines. |
| Ambidextrous Manual Safety Can Be Converted To Left | side only with included washer. |
| Barrel Type | Cold hammer-forged steel, 1:16"RH Twist, 6 Grooves |
| Checkered 1911 | style grip panels for a great appearance and comfortable, non-slip hold. |
| Cold Hammer | forged barrel results in ultra-precise rifling that provides exceptional accuracy and longevity. |
| Comfortable Precision | molded polymer grip frame with a serrated frontstrap and checkered backstrap. |
| Contoured Ejection Port And Easy | to-grasp bolt ears allow for durable and reliable operation round after round. |
| Factory | installed Picatinny rail for easy mounting of optics. |
| Features A Conveniently Located Push | button magazine release on the left side of the frame. |
| Finish | Blued |
| Grip | Checkered Synthetic |
| Internal Cylindrical Bolt Construction Ensures Permanent Sight | to-barrel alignment and higher accuracy potential than conventional moving-slide designs. |
| Manufacturer | Ruger |
| Model | Mark IV 22/45 Tactical |
| Mpn | 40190 |
| Simple One | button takedown for quick and easy field-stripping and proper chamber-to-muzzle cleaning. Pressing a button in the back of the frame allows the barrel-receiver assembly to tilt up and off the grip frame without the use of tools. |
| Upc | 736676401901 |
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