Provides Added Support And Ensures Correct Eye Level Alignment With Open Sights Or Optics For Fast Target Acquisition * Simple Snap On Installation On Most Collapsible Stocks With Fins (Ribbed) - No Tools, Gunsmithing, Or Stock Modification Required * Great For Rifles Or Shotguns With AR-15 M4 Style Collapsible Stocks * Constructed Of Glass Filled Polymer For Supreme Lightweight Durability - Made To Withstand Harsh Tactical Conditions * Set Of 2 Cheek Risers - .7" & 1.25" High Risers (Black Color Finish)