Ruger Mark IV 22/45 Lite – .22 LR, 4.40" Threaded, FDE Cerakote, 10+1 (43920)

The Mark IV 22/45 Lite is Ruger’s lightweight rimfire with the one-button takedown that made the Mark IV lineup worth owning. This configuration is the Iron Valley Distributor Exclusive: Flat Dark Earth Cerakote aluminum receiver, 4.40-inch threaded barrel, G10 grips, and two 10-round magazines. Ruger model 43920, UPC 736676439201. This listing is for the FDE Cerakote Mark IV 22/45 Lite, model 43920 only.

One-Button Takedown

Press the button at the back of the frame and the barrel-receiver assembly tilts up and off the grip frame — no tools. That is the Mark IV upgrade over the Mark III, and it makes chamber-to-muzzle cleaning straightforward.

Lite Receiver, Threaded Barrel

• Ventilated aerospace-grade aluminum receiver with a tensioned stainless steel barrel
• 4.40" barrel threaded 1/2"-28 with thread protector for muzzle devices
• Cold hammer-forged barrel, 6 grooves, 1:16" RH twist
• Flat Dark Earth Cerakote finish on the receiver
• Empty weight 25 oz — Lite in the name for a reason

Sights, Rail, and Controls

• Fixed front and adjustable rear sight, plus a factory Picatinny rail for optics
• Ambidextrous manual safety (convertible to left-side only with the included washer)
• Push-button magazine release; magazine drops free
• Magazine disconnect prevents discharge with the mag removed
• Polymer grip frame with serrated frontstrap, checkered backstrap, and G10 grips

What’s in the Box

• Two 10-round magazines
• Thread protector on the muzzle
• Washer for left-side-only safety conversion

Ruger Mark IV 22/45 Lite Specifications

Frequently Asked Questions

Is the barrel threaded?
Yes. 1/2"-28 with a thread protector included.

How many magazines ship with it?
Ruger lists two 10-round magazines.

What finish is this exclusive?
Flat Dark Earth Cerakote on the aluminum receiver — Iron Valley Distributor Exclusive model 43920.