Master Model 1/72 Hawker Hurricane Mk IIC Hispano Mk I 20mm cannons - AM72066
Master Model 1/72 Hawker Hurricane Mk IIC - Hispano Mk I 20mm cannons (with flat recoil springs) - AM72066
The set includes turned brass barrels.
It is very simple to use in Your model, and makes it extremely realistic. Insert the metal parts using Cyanoacrylate adhesives. Drill proper hole in plastic part if needed