Hello, I bought a replica of SR25 produced by G&G and I give a link to the replica. I'm generally new to airsoft and replica modification. I want to ask you what you think about it, do you have any feedback? I also need advice and guidance on how to turn it into a good DMR, what needs to be changed and what is more important to replace first. In my country, the power limit is 2.5 joules.