TandemKross Cthulhu Lower For Ruger Mark IV 22/45 Black Frame with Red Accessories

Overview

The TandemKross Cthulhu lower frame for Ruger Mark IV pistols features a cerakoted black and red finish and arrives fully assembled with over 30 upgraded components, allowing it to accept virtually any factory or aftermarket Ruger Mark IV or Mark IV 22/45 upper right out of the box. Constructed from durable metallic aluminum rather than factory polymer, the lower increases durability and performance while remaining a non-serialized part that does not require an FFL. The frame incorporates an enlarged and hooked trigger guard, a textured backstrap for improved ergonomics, and a single takedown screw that replaces the standard button to reduce play between the upper and lower. Included factory-installed components consist of the Cthulhu aluminum lower, HiveGrip, Victory Trigger, Accelerator Thumb Rest, Blast Pack, Bolt Keeper extended bolt stop, Cornerstone safety thumb ledge, engraved titanium grip screws (4-pack), and a rebuild kit.

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