sorry i dont know how to take a screenshot on the game if u know how to please tell me by commenting!
First what you do is:
Open your Ace of spades folder
Click on the kv6 folder
Replace this Shotgun with the default shotgun you have
Restart Ace of spades and your Done!!
Open your Ace of spades PNG folder
Replace the new scope with the default shotgun aim
Now you have a Scoped Cross bow!