Corvus Defensio, a firearm company based in Vienna, Austria, focused on enhancing the Steyr AUG rifle platform. This Company is tackling the deficiencies of the rifle with intelligent solutions designed by practical experience with the AUG in different environments. Corvus Defensio presents the first parts of their so-called “Steyr AUG Evolution Kit”. The Steyr AUG is a great rifle, but it somehow got stuck in the 70s’. In modern training and application due to its original design, the rifle lacks several features that are pretty standard with modern assault rifles and competition sport guns. Fast and reliable magazine changes, shoulder transition, a better trigger and proper light and laser mounting options are just a few of the things they wanted to improve.
One of the biggest problems of the AUG is ejecting the case into your face – which is a bullpup problem. The Corvus Defensio Case Deflector ejects cases forward or to the side and thus makes it ideal to shoot in every combat stance, from either shoulder, without any additional modifications or adaptations. Installation requires no drilling or modification to the stock as the two piece Case Deflector is simply plugged into the ejection port and tightened with two screws, the plastic stock is also protected against damage when an empty case is not completely ejected.
Corvus Defensio also enhanced the interface system of the AUG. There is a trend for increased rail space on modern weapon receivers. Back Up Iron Sights, Optics, Magnifiers, Lasers, NVGs, Thermals, you name it. The original A3 receiver rail is rather short. So Corvus Defensio developed a 35-Slot Receiver Rail that offers a long, solid mounting solution for the attachment of all that aforementioned accessories. The total length of the rail is the same as the rail length of an AR15 receiver and attached 9” (midlength gas system) railed handguard. Unlike the AR15 receiver and handguard rails, the Corvus Defensio 35-Slot Receiver Rail is solid (monolithic) from front to rear.
Unlike the original Steyr AUG A3 rail, the Corvus Defensio Receiver Rail reaches almost to the ejection port, making it easier to use short eye-relief optics. It is equipped with two QD-Sling Swivel attachment points and an interface to directly mount ACOG rifle scopes. Integral limited rotation QD Sling swivel attachment points . With much space for what the shooter needs: Keymod installation option in the front rail for mounting accessories on the sides. Keymod is the choice of Corvus Defensio also when changing the traditional AUG grip to a rail with much more options.
One of the biggest concerns shooters have with the Steyr AUG is the trigger system and how it performs. The original plastic trigger feels a bit like a single stage trigger with a hard pull and a creeping reset. As it was not possible to obtain one of these triggers in Europe CorDef started to design their own Enhanced Trigger System. It´s rather tricky to accomplish a proper technical solution with a reliable trigger system that fulfills the expectations. But Corvus Defensio is on a good way to get a solution using in their opinion one of the best AR trigger systems that can be found. Namely ALG and Geissele Triggers. The fine-tuning and the quality checks are still going on and the prototypes are very promising.