Hey I need some advice on my gun. Echo 1 ST6:http://www.airsoftgi.com/mobile/product_info.php?products_id=9957 I can either upgrade the gun it's self, or buy a new gun and build/modify. I would put a new RIS rail, lonex red piston, R-hop and shim and grease. Should I buy a new gun and upgrade, or just upgrade my current m4 with what I have listed + your advice? I will be in Chesapeake VA in a week or two so I could buy a gun from the store there. I know they sell g&p's. Thanks! Edit: Budget is 200 for upgrades to Echo 1, and 450 to upgrade a new gun. My friend would like to buy my Echo 1.