- 678 (service) Pietta main spring for 1851 Colt Navy black powder revolvers in calibers: .36 and .44.
678 (service) Pietta drum pusher for 1851 Colt Navy black powder revolvers in calibers: .36 and .44.
Technical Specification:Service code: 678
Name: Mainspring Navy
Number on diagram:
Manufacturer: Pietta, Italy
Created by: Sharg® Company - including importer