2 or more of 3D GameObjects on scene works not properly

Unity Engine
1

I have 3D model of tank, witch consists of parts:
tank -------
void
base
turret
barrel1
flare1
When I make GameObject bullet I have references on “turret” and “flare1” gameObject and it works fine! But when I create a Prefab and put it on scene 3 copies, the bullets not appeared or mayby appeared only in one copy! I think It conflict with names! How can I make all copys to fire?

2

We can’t help without seeing your code. (Use code tags)

3

I used public variable on GameObject , so that was collision(( Thanks everyone who replied! Happy New Year and mary cristmas ))