Heresy Design Extended Magazine Release For Steyr AUG - Standard Black. The Heresy Design Extended Magazine Release is simple to install and has a seamless fit with STEYR AUG A3 M1 Standard stocks. The large surface area of the lever is easy to reach and provides better ergonomics for magazine changes. Specifications for Heresy Design Extended Magazine Release For Steyr AUG - Standard: Manufacturer: Heresy Design Gun Make: Steyr Gun Model: Steyr AUG Color: Black Features of Heresy Design Extended Magazine Release For Steyr AUG - Standard Compatible with A3 M1 (Standard Stock ONLY) Enclosed Slave Pin Aluminum material for Increased Durability Oversized lever for accessibility Limited Lifetime Warranty Package Contents: Heresy Design Extended Magazine Release For Steyr AUG - Standard Sticker What firearm models does the manufacturer say Heresy Design Extended Magazine Release For Steyr AUG - Standard is compatible with? The manufacturer says that Heresy Design Extended Magazine Release For Steyr AUG - Standard is compatible with Steyr AUGHeresy Design HD-MR: Extended Magazine Release For Steyr AUG - Standard Black