Technical Specifications
Overall Lenght 1 085 mm
Manufacturer DUO - Dusek Opocno
Barrel Lenght 490 mm Type piston with break barrel
Sight Radius 405 mm Manufactured Pieces not available
Weight 2.55 kg Production Period 193x
Caliber 4,5 mm

Rear Sight Side View
Rear Sight Top View
Front Sight
Trigger and Trigger Guard

Airguns DUO I have been manufactured by company DUO  (DUsek Opocno, owner Frantisek Dusek) before the World War 2. Manufacturing number 129 766 is on the bottom side of barrel. Stock is mounted by massive bolt inside. Stock is provided with metal butt end. Rear sight elevation can be changed by adjusting screw.