Pulsar DN Metal quick release adapter 42 or 50 or 56mm. for Core, DN55 and DFA75
- '42' for outside diameter rifle scope with shim rings from 45.5mm to 50mm
- '50' for outside diameter rifle scopes with shims from 51.6mm to 59mm
- '56' for outside diameter rifle scopes with shims from 60mm to 65mm