Tandemkross Fully Assembled Cthulhu Aluminum Lower for Ruger Mark IV and Mark IV 22/45, Black (Additional Colors Available) (opens in new tab)

***NOTE: Not serialized! Does not require an FFL!! Assembled Cthulhu Lower includes: Blast Pack, Bolt Keeper Extended Bolt Stop, Bolt Stop Pin, Bolt Stop and Stud, Cornerstone Safety Thumb Ledge, Engraved Titanium Grip Screws (4-Pack), hiveGrip, Cthulhu Aluminum Lower, Rebuild Kit, Safety and Victory Trigger. Red, Green and Flat Dark Earth Available at Additional Cost!