Ruger Mark IV 22/45 Lite .22 LR, 4.4 in Threaded Tensioned Barrel, Desert Tan, Swampfox Micro Reflex, 2019
This Ruger Mark IV 22/45 Lite pairs a 4.4-inch tensioned stainless barrel with a factory 1/2-28 threaded muzzle and a ventilated aluminum shroud finished in desert tan. Built in 2019, it comes equipped with a Swampfox micro reflex red dot and one accessory rail section at the 6 o'clock position. On Mark IV pistols the upper/receiver is the serialized component; the 500-prefix on this example indicates post-2017 production not subject to the 2017 safety retrofit.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good - Intact, well-defined lands and grooves.
Specific Condition Notes: The pistol appears to have been repainted in a khaki tone, and the finish shows typical signs of age and reapplication. Carbon buildup is present in the corners of the breech and can be addressed with routine cleaning. Light handling wear is visible across exterior surfaces. The Swampfox optic's glass is clear and it functions as designed. Overall, it presents as a well-used example in functional condition.
What's Included
- Swampfox micro reflex red dot sight (installed)
- Two short accessory rail sections under shroud (installed)
- 1/2-28 knurled thread protector (installed)
- Adjustable rear and fixed front iron sights (installed)
The Lite configuration features a ventilated aluminum shroud with elongated oval lightening windows over a tensioned stainless barrel, finished in desert tan. A gold-tone bolt is visible through the windows, giving this example a distinctive appearance.
The barrel measures 4.4 inches and is factory threaded 1/2-28 with a knurled protector. The tensioned design provides a rigid assembly while keeping weight down at the muzzle end.
A Swampfox micro reflex red dot is mounted on top, and the factory iron sights remain in place with an adjustable rear and fixed front blade. This setup offers a clear, fast sighting solution with backup irons retained.
One short accessory rail section is installed under the shroud at the 6 o'clock position, providing mounting points for compact lights or other rail-mounted accessories as desired.
This .22 LR pistol uses a blowback action and was manufactured in the USA in 2019. On Ruger Mark IV models the serialized component is the upper/receiver, and the 500-prefix denotes post-2017 production outside the scope of the 2017 safety retrofit.




