TANDEMKROSS Cthulhu Black Lor Mark IV & 22/45 Grip Frame Assembly

The TANDEM KROSS Cthulhu Lower grip frame assembly for Ruger Mark IV and Mark IV 22/45 pistols is a premium black upgrade designed to improve durability, control, and overall handling. Built as a fully metallic lower, this upgraded grip frame offers a stronger feel than factory polymer-style lowers while adding competition-minded ergonomics for range use, rimfire competition, and serious Mark IV customization.

Specifications

• Manufacturer: TANDEM KROSS
• Model: Cthulhu Lower
• MFR #: TK26N0461BBY1
• UPC: 657768317156
• Finish: Black
• Material: Metallic lower construction
• Compatibility: Ruger Mark IV and Ruger Mark IV 22/45 pistols
• Caliber Platform: .22 LR Ruger Mark IV series
• Type: Upgraded lower / grip frame assembly
• Design: Drop-in ready upgrade platform

Benefits

• Upgrades the factory lower with a more durable metallic grip frame design.
• Improves grip control with an enlarged trigger guard and enhanced ergonomic layout.
• Built for shooters looking to customize or upgrade their Ruger Mark IV or Mark IV 22/45 pistol.
• Black finish gives the pistol a clean, tactical, and competition-ready appearance.
• Designed to support better handling, stability, and long-term performance for rimfire shooting.