Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Will the fit as a side mount on an AR 15?
Document: I have this mounted on my 9MM AR-15 with a FastFire 3. It's very good construction and very easy to use. This will allow you to co-witness your FastFire with your BUIS.
This is my favorite mount for using a Fastfire on Primary Arms clone on an AR. It places the optic at the proper height for an absolute cowitness and protects it as well. I only wish they had a QD mount function rather than the fixed mount.
I needed a way to raise the level of the site as well as protect it. This mount does both!
This item fits the Fastfire II and III perfectly. Provides excellent protection for the Fast fire and a good solid mount. Access to the switch and adjustments is easy and quick. Good product... get it
When I ordered the product I thought the Fastfire was included. Boy was I wrong! After it arrived I liked the mount so much I ran down to my local Gun Store (Butches) and bought the sight.
Great product for placing your fastfire II on your AR. It works perfect and even comes with adjustment tools mounted in the base.
This product is great and fits tightly on my AR. It protects the Fastfire from everything except from user error. This product looks great and works great.
I needed a mount for my Burris Fastfire II that would allow it to see over the tall wind adjustment turret of my nikon P-223 scope. I am using a Burris PEPR scope mount which has rails to allow a sight to sit above the Nikon Scope. But the Fastfire alone with its standard rail mount was too low and the Scope turret blocked the view.So rather than get a simple riser, I decided to purchase this.
I already had one of these tactical mounts for the Burris FastFire II red dot site on another rifle, it really works quite well on an AR style rifle. I recommend for this purpose for sure.
I have 5 Burris Fast Fire 3 units. I bought 4 of these products for them. Protects and elevates the units. It also contains an area for an extra battery and a slot that holds the wrench used to dismount it. I gave it 4 stars only because the areas cutout to access the on/off button and the windage adjustment could be larger. You cannot see the arrow direction on the windage side without turning the gun upside down and looking in at an angle.
Answer: yes