Heresy Design Steyr AUG M2 Rail Black. Weighing in at just 4 oz this rail trims a full 2 oz off the factory version thanks to aggressive lightening cuts without sacrificing strength or rigidity. Designed for quick installation youll be up and running in under five minutes. This rail serves as the critical link between the AUG M2 platform and all Heresy Design conversion kits. Specifications for Heresy Design Steyr AUG M2 Rail: Manufacturer: Heresy Design Gun Make: Steyr Gun Model: Steyr AUG Color: Black Country of Origin: USA Features of Heresy Design Steyr AUG M2 Rail 2 oz lighter than factory M2 rail Integrated QD sling mount Simple 5-minute install with T30 Torx Mates with all Heresy Design AUG barrel conversions Package Contents: Heresy Design Steyr AUG M2 Rail Sticker Heresy Design HD-AM2R: Steyr AUG M2 Rail Black