Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Is a CO2 magazine availabe for this model ?
Document: The gun is a great purchase for the price and nice shooting. Buck wild hunting!I love Bass Outdoor Pro Shops, fishing, and moonshine!
The first reviewer was mistaken. This IS a gas blowback gun and works very nicely. The finish details are visually identical to the Smith & Wesson Sigma 40. Would be glad to purchase another one.
I have this exact gun and it costed 14 dollars at swapsmart. It is spring. It's good, but if you buy this you will get tricked out of your money.
Gun works great, great blow back, ok accuracy, it is a fun toy. For under $100 you can't go wrong.
Answer: no