Picatinny tube 40 low WR 40-QR-9 Picatinny rings - 40 mm, quick-release Low

Manufacturer: Optic Arms Country of manufacture: Europe Material made of: Steel Type of base: Custom for Weaver rail and Picatinny Tube: 40 mm Weight: 200 grams Maximum allowed torque for tightening base screws on the rail: 17-22 inch/pound according to the manufacturer's advice for the sight