http://steamcommunity.com/sharedfiles/filedetails/?id=325905288

• There are many wrong things with this item and some of them may not be the same for everyone
• Some people may not even have the problem as I saw a sniper with the item working perfectly once in a game
• But the main problem with the gun is that the model is not working correctly, the item goes inside sniper and the animations not work correctly, even the custom shooting sounds work only somethimes, or, they don't work at all

• The animation may be working a little bit better when you are in a game, the gun model may not be going inside sniper anymore but the idle animations are not working, custom shooting sound is not working and you will be stuck with a different idle animation

• After shooting few times the idle animation looks like this:

There are 3 easy steps how to fix the gun. There may be more solutions to this, but this is the only one I have got yet with help of someone as we tried many things

• You will need to get the Artificer's Hammer for this, just get it from the market, or from the Level 7 present (It will be in Inscribed quality)

• Or you can just get the Muh Keen Gun with no Kinetic gem and just skip the second step and get to the third one
• If you are getting the Muh Keen Gun with no Kinetic Gem in it, make sure it really does not have the gem on it, or else you will have to sell the item again or get the Artificer's Hammer to get the gem out

• After you got the hammer, start your game and use the hammer to remove all your gems from the Muh Keen Gun
• You will end up with a Inscribed Gem (if it was on the gun) and a Kinetic: Muh Keen Gun gem

• You can put Inscribed Gem(s) back on the gun if you had some on it, but DON'T put the Kinetic: Muh Keen Gun gem back on the gun

• The problem with the gun is that it acts with the gem on it like it is not there, but after removing the gem, sound of the gun and the animations will get back how they are meant to be
• There may have been problems with the sounds of the gun, since after around 2-3 games, the gun started to make noices of the normal sniper rifle again, but the new animations are working fine
• I am not sure if the sounds may switch again for other people since I have done this only for myself yet

• Now you can just equip the item and have fun in your Dota 2 match