boba blaster pistol

is there any tutorials on the boba fett blaster pistol;)

If you mean the side arm, here's my suggestion (though not a proper tutorial):
Print the non-existing blueprints (or a photo) to get the shape right. Then cut the squareish parts out from wood, and make the barrel parts using a lathe. After that, only some further shaping using a rough sandpaper would be needed .

Sadly, there don't seem to be much reference photos of it :facepalm