it’s compatible with both Ruger® Mark IV™ 22/45™ factory lowers and TANDEMKROSS’s Cthulhu Lower

Amongst your included screws will be two different length pre-travel screws and two different length over-travel screws

Installation manuals can be found here

Ruger® Mark IV™ 22/45™ LITE

a missing or faulty part can quickly derail a great day

Hogue Griffschale für Ruger Mark IV - G10 - Piranha Topseller it’s compatible with both Ruger®Hogue grips for the Ruger Mark series. For a secure grip on your firearm! Variant: Two piece grip Piranha Material: G10 Color: Choose between Solid Black and G Mascus grey black Fits: Ruger Mark IV Does NOT fit Ruger Mark IV 22 45 If you're unsure which firearm you have or which grips you need, simply send us a photo of your firearm, and we will assist you.