First .. The GUN was used in pointing on yash as he helped Neelam along with Arati to run with her lover as her parent were against her choice of groom . This incident made Arati realize her love for Yash .
Later THE GUN came into picture again when Yash's supposed to be 3rd wife ISITA pointed the gun at him as he refused to marry her ... since he was pressurized to marry her in-exchange of his son Ansh . This incident made kids to go in front of their dad and ask for forgiveness on his part from issita ,which made her heart go soft on Yash .

Later Issita used the GUN to kill herself as she doesn't want her parent to be pressurized for her marriage . this made AAkash move in bravery to accept Issita as his wedded wife

GUN MAHARAJ was used later by SP on AAkash and on his mom as his mother claimed him to be her son's father , bringing out the real dark secret of SP

Lastly the GUN GOD came in Akash hand in style to threaten SP for misbehaving with his mom .

So GUN played its role to bring a important transition in the story.đ
So, HAI HO GUN DEVTA KI !!!!!