Steps to follow: 1/ Import the latest VRC SDK3 FIRST. 2/ Buy and Import UniSight from booth. If you don't have or don't want to buy, then make your own system. Link: https://booth.pm/ja/items/1974609 3/ Setup VRChat Layers + the custom layer name exactly in the pictures included in this package. 4/ Setup Physic Logic from project setting exactly low in the picture showed in this package. 5/ Import SnipexTRexPackage.unitypackage LAST. Model made by Melody and Wired. Armature + fixed scope by Aoinu and Kizuragi Weapon Udon Logic/Programming by Black Lilith Custom Combat Udon Logic/Programming by Black Lilith Now include particle combat script if you want to check. I still highly recommend make your own The Model and Udon# Logic are completely free. You're allowed to modify or do whatever you want to this package. If you only want the model but not the Udon# Script. It's fine, I understand, feel free to download just for the model. P.S: please don't ask me how to make this work on avatar. This is for game world item. if you want it to work on avatar, you have to reparent all animation, do your own animator stage logic. Thanks Please Discord message me: Black Lilith#5464 Only for question and fix or tutorial