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Steyr #AUGust Continues With New M-LOK Rails



Just a few days remain in #AUGust, but there’s still plenty of time to celebrate Steyr’s iconic bullpup rifle–and deck out your own with the rails your bullpuppy has been begging for. Called the M-LOK Forward Accessory Rail and the A3 M-LOK Receiver Rail, these aftermarket accessories are sourced from Corvus Defensio, an aftermarket parts partner so trusted by Steyr that they’ve arranged to be the exclusive U.S. distributor. Both rails are currently in stock and available for purchase.

The Corvus Defensio M-LOK Forward Accessory Rail replaces the Vertical Fore-Grip on any AUG to provide ample mounting solutions for items such as aftermarket grips, bipods, laser sights and illumination devices. It incorporates a seven-slot Picatinny top rail and three M-LOK mounting positions on each side as well as at the bottom. The hard-anodized 7075-aluminum M-LOK Forward Accessory Rail weighs 2.1 ounces and has a suggested retail price of $159. Two accessory M-LOK-mounted Picatinny rails—a four-slot rail that can be mounted on either side and a 17-slot bottom rail—are also available for $34 and $49, respectively. Both accessory rails include the required hardened-steel mounting hardware.

The new A3 M-LOK Receiver Rail is a multi-function mounting system designed to replace the standard top rail on the original-style A3 receiver. At 14.76 inches in length, the 35-slot hard-anodized 7075-aluminum rail offers A3 owners the longest mounting system on the market for the attachment of optics, back-up iron sights, laser devices and other accessories. The A3 M-LOK Receiver Rail weighs 5.15 ounces and spans from 0.25 inches in front of the ejection port to a point over the barrel 1.5 inches beyond the forward edge of the gas block. It features two forward M-LOK slots on each side, QD-sling swivel attachment points on each side of the rail as well as an integrated barrel-rotation block. The A3 M-LOK Receiver Rail also provides an interface to direct-mount Trijicon® ACOG riflescopes via seven mounting holes after removing the Picatinny base. This rail’s suggested retail price is $199.

While the A3 M-LOK Receiver Rail is not compatible with the current AUG A3 M1, the similarly designed 23-slot M1 Receiver Rail is available for that rifle. Other Corvus Defensio AUG enhancement parts—the Anti-Rotation QD-Sling Attach, the Enhanced Release Button and the Case Deflector—are also available in the Steyr Arms USA Webstore.

A final hint: Steyr Arms USA offers a free weekly newsletter, and we’ve seen them offer some pretty nice discounts on accessories like the Corvus Defensio M-LOK line! Steyr newsletter insiders always receive the first notification of such sales, which are first-come, first-served and generally only last as long as supplies do. Just go to and, when the popup comes up, enter your e-mail address.


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