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

Input:
Question: Hi, is ok to have the Co2 tank in side the gun half day or all day for hunting??
Document: I am not sure about the safety on this. It is a bit awkward to use. It takes two hands to do it. If you are a lefty you might be able to do it one handed with your thumb? The sights are not move able and it seems way off. The amount of shots per co2 tank seems ok but I would think they could come up with a way to get more shots per mag? Might be ok for just shooting cans at 20 feet? We will see?
Got this gun today, took it out of the box and went to shoot it, the slide connection to the plastic is terrible, it wobbles side to side, yea its heavy but still nothing like a real pistol. went to go shoot got about 5 shots off before the plastic on the bottom broke sending the co2 cartage flying. Very very disappointed.
I get about 3 and a half magazines or 54 shots before co2 is too low to cycle the slide.To sum it up, I think in terms of blowback pistols, I would have been better spending the same amount or a tad more on a blowback bb gun, as the pellets in this case only make loading difficult and accuracy pointless with the fixed sights.
To start off, this pistol looks great, is a good size, made of good materials, and has a nice weight. The blow back is a cool feature as well.But unfortunately the cons outweigh the pros. I bought this months ago and put maybe a half dozen co2 cylinders through it, which would be about 200 pellets. The first 20 shots are full power and the blowback is awesome.
If you're into the "Blowback" recoil thing go with this pistol. The accuracy (due to the blowback) isnt that good. (I use Crosman Field Hunting Pointed, & Crosman Destroyer EX). This pistol isnt worth the price just for a blowback kick. The blowback kick last for about 16-18 shoots. Plus the Co2 doesnt last as long (compared to a non blowback pistol).
I can probably only get half the number of shots off this pistol (about 30) that I could with my similarly powered Crosman 1008. The other thing that is missing from this gun is after the last shot is fired, the slide does not stay locked open. The pistol is very accurate from 20'. The iron sights are complete garbage and are non adjustable.
I'm disappointed with this pellet gun. It misfires often and I've had a few instances with the clip getting jammed in the gun. I've only used it 5 or 6 times and I think it might end up a $90 paper weight. On the up side, it has nice weight and feel and looks good, but if you want something you can shoot without being annoyed you'd be better off looking at other options. It's a new product so maybe it will get better once it is out a while longer.
Pros: I like the weight and solid feel. Definitely feels more like a handgun than a toy. 16 shot magazine (8 per side) is a nice feature. Price is reasonable.Cons:  Haven't figured out if I can adjust the sights yet, but it shoots consistently low. The trigger is a bit rough, but maybe that will smooth out some with use.For what I purchased it for (a little trigger time when I can't get to range), it is a reasonably good gun.
The only thing I did discover is if you pull the trigger to fast the pistol will not build a full charge. If I pause between shots for just a half second it recovers and produces a fine pressure for the shot.
Gamo makes great guns, this, thought to be one of them. Unfortunately, mine came with a very loose slide with a lot of free play. Most likely, just a bad batch. Second, to let everyone know, the FPS claim is with PBA platinum pellets. Using the standard skirt pellets are ok because the lead gives them heaviness, but, it leaves residue on your fingers, and the pellets drop very fast.
Answer: yes