Ruger Mark IV 22/45 250th Anniversary, .22 LR, 4.40" Threaded, 10+1, Blued, Pistol The Ruger Mark IV 22/45 250th Anniversary is a .22 LR rimfire pistol that combines a commemorative American Liberty engraving with a practical target-shooting configuration. Model 40194 pairs a 4.40-inch threaded bull barrel with a blued alloy steel receiver, a polymer grip frame and a factory-installed optic mount. It brings the familiar feel of 1911-style grip panels to Ruger's Mark IV platform, making it an appealing choice for recreational shooting and a commemorative firearms collection. This anniversary edition carries the barrel inscription "Made in the 250th Year of American Liberty." The pistol includes two 10-round magazines and offers 10+1 capacity. Fixed front and adjustable rear sights provide an iron-sight setup, while the supplied mount accommodates several widely used pistol-optic patterns. Choose the Ruger Mark IV 22/45 250th Anniversary at BattleHawk Armory for a collectible rimfire with useful range features built in. 4.40-Inch Cold Hammer-Forged Threaded Bull Barrel The 4.40-inch bull barrel is cold hammer forged, with six grooves and a 1:16-inch right-hand twist. This construction produces consistent rifling in a barrel built for lasting rimfire use. The bull profile gives the pistol a substantial barrel assembly within an 8.50-inch overall length, while the commemorative engraving makes the barrel a defining visual element of this edition. The muzzle has 1/2x28 threads and includes a thread protector. That interface provides a starting point for compatible muzzle accessories, with fit determined by the accessory's caliber rating and mounting requirements. The threaded barrel and protector are part of the pistol's standard configuration. Fixed Sight-to-Barrel Relationship and Optic Compatibility The Mark IV uses an internal cylindrical bolt, allowing the sights to maintain their relationship to the barrel while the bolt cycles. This design is a distinctive part of the Mark IV shooting experience and supports its accuracy potential. A fixed front sight and adjustable rear sight give the pistol a straightforward sighting arrangement for recreational target work. The factory-installed optic mount accepts RMR, DeltaPoint Pro (DPP) and RMSc pattern optics. This offers flexibility when selecting a compatible red dot. Confirm the individual optic's mounting dimensions and hardware requirements before purchase. An optic is not included with this pistol. Polymer Grip Frame with 1911-Style Panels The precision-molded polymer grip frame uses a serrated frontstrap, checkered backstrap and checkered synthetic grip panels. These textured contact surfaces help provide a secure hold, while the 1911-style panels give the 22/45 its recognizable grip layout. The blued upper assembly and dark grip frame maintain a traditional appearance around the anniversary marking. At 33.3 ounces, 1.22 inches wide and 5.50 inches high, this model combines a substantial barrel and receiver with a polymer lower frame. Those dimensions describe the pistol itself and help when comparing cases and other model-specific accessories. Mark IV Convenience and Controls The Mark IV's one-button takedown design simplifies routine maintenance. An ergonomic bolt stop, easy-to-grasp bolt ears and a contoured ejection port support convenient handling. The left-side push-button magazine release allows the magazine to drop free, and the two included magazines give the package a useful spare from the outset. An ambidextrous manual safety accommodates operation from either side. The included washer supports the optional left-side-only safety configuration. A magazine disconnect prevents discharge when the magazine is removed. Product Specifications Manufacturer: Ruger Model: Mark IV 22/45 250th Anniversary Manufacturer model number: 40194 Product code: RUG40194 UPC: 736676401949 Caliber: .22 LR Barrel: 4.40-inch cold hammer-forged threaded bull barrel Muzzle threads: 1/2x28 Rifling: Six grooves; 1:16-inch right-hand twist Capacity: 10+1 Receiver: Alloy steel with blued finish Grip frame and panels: Polymer frame; checkered synthetic panels Sights: Fixed front; adjustable rear Optic mount: Factory installed; RMR, DPP and RMSc patterns Overall dimensions: 8.50 inches long, 1.22 inches wide, 5.50 inches high Weight: 33.3 ounces Included Items Ruger Mark IV 22/45 250th Anniversary pistol Two 10-round magazines Factory-installed optic mount Thread protector Washer for the optional left-side-only safety configuration Frequently Asked Questions What distinguishes Ruger model 40194? It combines the 250th Year of American Liberty barrel engraving with a 4.40-inch threaded bull barrel, blued finish and factory-installed optic mount. Which optic patterns does the included mount accept? The mount supports RMR, DPP and RMSc patterns. Select an optic and hardware that meet the mount's requirements. How many magazines are included? Two 10-round magazines are included. The pistol's capacity is 10+1. Order the Ruger Mark IV 22/45 250th Anniversary from BattleHawk Armory and add a distinctive American Liberty edition to your rimfire collection.