Universal smooth bore hunting gun. Owing to extra barrel set with oval-spiral bore (Lancaster rifling), the gun is ideal for hunting big game. Oval-spiral rifling provides for high patterning, when shooting slug rounds (Brenneke and Gualandi slugs) at a range up to 100 meters and optimum patterning when shooting shot cartridges.

Design of extra barrel unit allows zeroing of both barrels. The barrel unit has an open sight adjusted for windage and elevation. Accepts scope mounts.