Steyr AUG Enhancement Kit by CORVUS Defensio of Austria

    Non-mainstream firearms like the Steyr AUG normally have a little aftermarket support. The development of new products with a small potential customer base is not always justified or results in an overly expensive product. Nevertheless, even if there is a very small demand, you’ll still find one or two companies offering upgrade parts for the relatively rare firearms. A company called Corvus Defensio located in Austria is specialized in making Steyr AUG upgrades. Let’s take a look at the five-part kit they offer.

    The first part in the Corvus Defensio set is the 14.76″ top Picatinny rail which also has a machined out slot for direct mounting Trijicon ACOG scopes. It also features KeyMod slots on both sides of the front portion of the rail as well as QD sling sockets from either side of the rail.

    Next part of the kit is the Corvus Defensio case deflector. It is a drop in part mounting directly on the AUG ejection port. In order to mount it, you need to place it on the ejection port and tighten the two screws. This part is supposed to deflect the cases forward decreasing the possibility of hot ejected brass hitting your face when shooting from unusual stances. This should also be useful when transitioning to support hand shooting.

    Next one is a forward accessory rail replacing the stock vertical grip. It has a top Picatinny rail and KeyMod slots on both sides and the bottom portion. The use of top rail is rather hard to imagine – whatever accessory is mounted there it must be able to fit the narrow gap between the barrel and the rail.

    Last two parts are KeyMod compatible 4 and 15 slot Picatinny rail sections. This set is available through the Corvus Defensio’s website at the MSRP of €374.17 (about $440).

    Hrachya H

    Managing Editor

    Being a lifelong firearms enthusiast, Hrachya always enjoys studying the history and design of guns and ammunition. He also writes for and
    Should you need to contact him, feel free to shoot him a message at [email protected]