Vixen ED115S APOs User Manual | 1 page | Also for: ED103S, ED 81SVixen Manual - Buy Vixen Horns Loud 130dB Heavy Duty Hand/Manual Crank Alarm/Siren (Air Raid) with Rail Stand Base VXS-1200MB: Security Sensors - Amazon.com FREE DELIVERY possible on. Excalibur Vixen . Vixen's main components. Bolts locking riser in place. Sight with fiber optic front pin. Ready for the range Assembly . Assembly of the Vixen is pretty straightforward: just align the riser section onto the stock section and bolt on the two Allen screw. Just make sure to lubricate the two screws and washers otherwise you will have a hard time when you will need to un.