TACSOL PAC-LITE IV | Ruger MKIV 22LR 6in ODG

The TACSOL PAC-LITE IV is an upgraded replacement upper designed for Ruger® Mark IV and Mark IV® 22/45® pistols. Built to reduce weight while improving balance and accuracy, this Pac-Lite unit features a fluted 6-inch barrel in Matte Olive Drab and fits the existing MK frame without the need for a gunsmith. For a reliable, budget-conscious optic that complements the platform, consider a small red-dot such as the Vortex Venom (3 MOA) which is well under $1,000 and pairs cleanly with the sight picture of a .22LR target pistol.

Product Specifications

• The manufacturer is listed as TACSOL.
• The model name is PAC-LITE IV and it is intended as a Ruger MKIV upper replacement.
• The caliber is 22LR.
• The barrel length is 6 inches in this configuration.
• The finish is specified as Matte Olive Drab (OD Green) with fluting.
• The rate of twist is 1:16.
• The barrel features 1/2″ x 28 threads for muzzle accessories.
• The muzzle includes an 11 degree target crown.
• The breech face and receiver are made from stainless steel.
• The barrel and receiver are constructed from lightweight aluminum.
• The listed weight for this unit is 9.5 oz.
• The overall length for the listed configuration is 6 inches (barrel length).
• This upgrade installs on an existing MK frame and is described as user-installable without a gunsmith.
• Other available barrel length options noted by the manufacturer include 4.5 inches and 6 inches.
• The UPC for this product is 879971008076.

The PAC-LITE IV is aimed at shooters who want a lighter, better-balanced upper that improves the handling and accuracy of the Ruger Mark IV platform for target shooting and rimfire competition. Its combination of an aluminum fluted barrel and stainless breech face gives a practical balance of weight savings and durability while keeping installation straightforward.