Where to buy replacement springs?

Where would one look for a replacement spring for a shadow?  I got a "pre set" tarantula with a custom brass tophat and guide.  If and when I wear through that one, can I just purchase an un set tarantula and swap out the guide and tophat?  Thank you.

[vinceb]

...if you install a new Tarantula spring? I'd think that it would be a simple matter of replacing the spring and keeping all the other stuff in place.

The only difference between a set and an unset spring is the free length - the unset spring is longer and harder to install. Of course, the first time you cock the gun the spring becomes "set".

[CharlieDaTuna]

The answer would be "Yes". Just order a new Tarantula from Maccari and use  existing tophat and spring guide that replaced the original.

nt.