Oerlikon 20mm Drum Magazine - 20 rds 20 round drum magazine for the Swiss Fliegerabwehr Kanone Modell 1954 manufactured by Swiss manufacturer Oerlikon. Features a numeric round counter in five round increments. The Flab Kan 54 was... MSRP: Now: $185.00 Add to Cart Oerlikon Oerlikon 20mm Drum Magazine - 20 rds MSRP: Now: $185.00 Add to Cart Compare Selected ×