I am hoping I can get some opinions on this. My friend has recently came into sniping because of me but this is the only gun he will be able to get for a while. It will most likely be about 4 or 5 months before he will be able to get anything else. He plans on getting the gun and upgrading it with money that he earns from cutting grass. My question is how easy is this gun to upgrade and is this a good decision?