The Ruger Mark IV 22/45 Tactical in Flat Dark Earth is a .22 LR rimfire pistol on Ruger’s 1911-style polymer grip frame (Ruger model 40181). Its 3-inch barrel is threaded 1/2×28, so a muzzle device or rimfire suppressor mounts straight to it, and the 7-inch overall length keeps the whole pistol compact. The finish is Flat Dark Earth, and the checkered 1911-style grip panels give a secure hold without adding bulk. Ruger’s one-button takedown lifts the barrel and receiver off the frame without tools, which makes cleaning quick after a range session. It is a natural trainer or plinker for shooters who want a threaded rimfire that handles like a 1911.

Key Specifications

• The chambering is .22 LR, an inexpensive rimfire cartridge that makes high-volume practice affordable.
• Magazine capacity is 10+1, a full ten-round magazine plus one in the chamber for longer strings between reloads.
• The barrel is 3 inches long, which keeps the pistol at 7 inches overall and 29 ounces unloaded.
• The barrel is threaded 1/2×28 and takes a thread protector, so muzzle accessories attach without a gunsmith.
• The safety is an ambidextrous manual safety that Ruger notes can be converted to left-side only with the included washer.

Frequently Asked Questions

Can I attach a suppressor or muzzle device to this pistol? Yes. The barrel is threaded 1/2×28 and comes with a thread protector, which is the standard pitch for rimfire muzzle devices.

Does the Mark IV 22/45 Tactical have a manual safety? Yes. It uses an ambidextrous manual safety, and Ruger includes a washer that converts it to left-side only if you prefer.

Buy the Ruger Mark IV 22/45 Tactical .22 LR Pistol, Threaded Barrel, Flat Dark Earth

A compact threaded .22 in a Flat Dark Earth finish is a useful addition to any training lineup. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and browse more semi-auto handguns while you are here.