@myria666 Would make a lot more sense to remove the locking pin of the revolver's hammer and replace that, bypassing the trigger. This way the revolver's spring is working together with the mechanism instead of against it.
@myria666 This could connect with a clockwork mechanism hidden in the collar part behind where you can see the gear with chain attached to it. This however is kinda stupid way to go about it cause the mechanism has to fight against the spring mechanism of the gun.