FAB Defense M4 Folding Buttstock for Moss 500 w/ Shock Absorber Black AGMF500-FKSB. Advantages: Rock solid One-Piece Ergonomic Design Special Non-Slip Texture Made from Reinforced Composite Materials Enhances Natural Fighting Stance and Hold on your Shotgun. Slightly Angled to Counter Recoil No Gunsmith Required Provides Storage Compartment for Batteries/Cleaning Kit Optional- M4 Style Aluminum Buffer Tube and Our Famous GLR-16 Buttstock Upgrade Compatibility: Mossberg 500/590 & Maverick 88 12-gauge Shotguns Specifications for FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option: Manufacturer: FAB Defense Color: Black Gun Model: Mossberg Model 590 Mossberg Model 500 Stock/Brace Material: Steel Polymer Aluminum Additional Features: Pistol Grip Finish: Black Package Contents: FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option What firearm models does the manufacturer say FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option is compatible with? The manufacturer suggests that FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option is compatible with Mossberg Model 500 Mossberg Model 590FAB Defense M4-Style Recoil-Reducing Collapsible Buttstock With Pistol Grip Mossberg 500/590