Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: can i use a field sport red and green sight with 4 reticles with this pistol?
Document: didn't have much time with this gift but did sight it in with a reflex sight. 16 shots at 30' within the diameter of a Nickle, no supports....  will have to purchase one of these for myself next. construction and materials are solid. it's a vary long pistol with rifle accuracy. used Crosman field hunting pointed pellets.
This gun is heavy and hard to hold steady for long. After 3 or 4 clips the CO2 pressure drops off and so does the accuracy. The blowback feature is what attracted me to this gun. You don't see that often if at all in a pellet pistol. Clips are easy to load. The blowback as others have stated with a fresh CO2 cartridge really kicks. Would I buy it again? probably not.
this is a good gun..shoots fast and hard.., i installed a bsa laser, sightmark sureshot reflex sight and SE light to make it even better..its wicked! you will love this it pops off like a real gun!
this is a realy nice pelet gun it looks like a real gun ,i dont like that when you take off the pretend silencer the tube which the shoots through is one long peace,so when you take the silencer the tube is sticking out 6 to 7 inches so basicly you have to use it together.i like that its a blowback
What i did is i cut the internal barrel at the end of my gun, and then sanded  down the rough edges, so that i can still use my gun without the extended barrel, but if i want i can put the barrel back on with the suppressor to add more power. I would recommend the extended barrel  for killing anything larger than a bird. But dont shoot anything larger than a rabbit, or you wont have a clean kill. This gun is a beast, and very realistic.
I have to say this is a big waist of time and money! If you buy this because you think its powerful. ( Well Gamo says 560 fps.. If you look that fps is done with a 4.7 grain pellet, and if you don't know that is lighter than a BB!) so don't kid your self! After a month of shooting the inner barrel completely broke from it's weld to it's base!! Don't buy this gun!! I would like to give it no stars! !
Wonderful pellet Pistol even the best Iv'e ever had just needed some oil to make over 500 FPS & the fire safty move better
Purchased for husband and 7 out of 10 times it won't fire and it jams up. He thought this would be a great pistol but is now very disappointed in its performance and has boxed it up to return it. He tried everything he could to get it to fire and not jam and finally gave up, it just doesn't work properly.
The pistol shoots ok for the first 20 shots and then begins loosing power fast. I only get 35 to 40 shots from one co2 cart. and the follow shots are very very slow!! The blowback feature is worthless, I would rather have the extra shots and power.
loading the pellets into the magazine is a little slow. you need small fingers! The size of the pistol is perfect for larger hand, and has a close feel to a berretta 92. Very fun pistol to shoot. I would have rated higher if the FPS was closer to the rating. 450-500' would have been better.
Answer: yes