Master Models SM-350-056 1/350 USN 3in/50 (7.62 cm) Barrels (12pcs)

Guns were used in many USN warships from 1915 to 1945:

Arkansas (B-33), New York (B-34), Omaha (CL-4), Buckley (DE-51), Cannon (DE-99), Edsall (DE-129) and Gato (SS-212) classes.
You can use these guns e.g. in Trumpeter model USS England (DE-635) and many more plastic and resin models in 1:350 scale
The set includes turned brass barrels. It is very simple to use in Your model, and makes it extremely realistic. Simply cut off the original plastic barrel and drill a hole in the remaining part and insert the metal barrel using Cyanoacrylate adhesives.