help needed!

hi everyone! this is my first post on here so my fault if i’m not posting in the right section or anything like that. i am trying to recreate the DC-15 blaster from star wars but i am having a lot of trouble for what seems like something pretty straightforward. i recorded the basic “pew!“ sound using a contact mic on a slinky to get the basic sound but i have gotten pretty stuck on the processing side. i’ll send the reference and what i have so far. if anyone has any advice i would definitely appreciate it. thanks!