Magpul Industries SGA Shotgun Stock for Mossberg 500/590/590A1 Grey. This Gun Stock from Magpul Industries is an adaptable stock for Mossberg 500/590/590A1 12 gauge shotguns designed with a wide range of customizable features and accessories to meet individual end user needs. NOTE: Newer 500 models may require additional parts for installation. Specifications for Magpul Industries SGA Shotgun Stock for Mossberg 500/590/590A1: Manufacturer: Magpul Industries Gun Model: Mossberg Model 500 Mossberg Model 590 Gun Type: Shotgun Additional Features: 12.3-14.3in LOP Adjustment Range Condition: New Gun Make: Mossberg Quantity: 1 Length: 5 in Weight: 1.5 lb Width: 1.5 in Length of Pull: 12.3 - 14.3 in Dimensions: 1.5 x 5 in Features of Magpul Industries SGA Shotgun Stock for Mossberg 500/590/590A1: Ambidextrous User-configurable Spacer system for length of pull adjustment Improved grip ergonomics Recoil-reducing butt-pad Optional cheek risers for use with optics/raised sights Package Contents: Magpul Industries SGA Shotgun Stock for Mossberg 500/590/590A1 What firearm models does the manufacturer say Magpul Industries SGA Shotgun Stock for Mossberg 500/590/590A1 is compatible with? The manufacturer suggests that Magpul Industries SGA Shotgun Stock for Mossberg 500/590/590A1 is compatible with Mossberg Model 500 Mossberg Model 590Magpul Industries MAG490GRY: Mossberg 500/590 SGA Stock Grey