The Tacsol Pac-lite Iv Rug Mkiv 22lr 6 Odg Fluted from Tactical Solutions is a lightweight upgrade that replaces your factory Ruger Mark IV or Mark IV 22/45 upper to reduce weight, increase accuracy, and improve reliability, with an easy, gunsmith-free installation onto your existing MK frame. Available in 4.5 and 6 barrel lengths and in Gun Metal Gray, Matte Black, and Matte Olive Drab, this Pac-Lite assembly features a 1:16 rate of twist, 28 threads, and an 11 Degree Target Crown, delivering precise performance for target shooting and field use. The design utilizes a stainless steel breech face and receiver paired with a lightweight aluminum barrel and receiver, yielding a total weight of 9.5oz and a compact 6 length profile that enhances balance and handling, making shooters feel like pros. The OD Green Fluted finish adds a touch of rugged aesthetics while maintaining dependable operation, and the upgrades streamlined integration means you can outfit your Mark IV setup quickly. This combination of portability, exacting machining, and solid construction supports repeatable accuracy and reliable cycling, making Tactical Solutions Pac-Lite IV a smart choice for enthusiasts seeking improved performance from their rimfire pistols.