Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Does it fit the kwa m9 PTP
Document: This mag is well built and functions properly but it did not fit in my M9. Some of my friends have M9s  from other brands and the mags fit without a hitch but this is just too big. It is nearly imposible to put the mag in and it takes all my strength to pull it out. Also, once it is in, the gas just comes out all at once and does not fire.
For the first couple of uses this clip was great for my KWA m9. Then while I was using it the seal valve came off. Now it wasn't the way I put the green gas needle in because I have had a lot of experience with that... I'm not very impressed
Full auto is a blast and it is just over $100. The plastic version is $70 but I havent used one.
Answer: yes