Hey guys, I Would just like some opinions on what I'm doing here. This is my first build of this scale and I'm not quite sure if I am doing well here. So here goes. My base gun was a jg m16a4. I'm starting off upgrading internals first. The stock shell cracked so now I am running this: guarder reinforced 6mm shell, amp m130 spring, magic box ball bearing spring guide, classic army metal tooth piston, bravo aluminum piston head, magic box aluminum cylinder head, 3/16" sorbo. Stock parts are gears/motor (which pull the spring fine) wire set, tappet, air nozzle and selector. The gearbox is shimmed. For a bucking I have a systema bucking and concave nub. Later I will get a 509mm 6.03 barrel, madbull ultimate hop up, and gemtech metal body. Soon I'll get a full cylinder because for some reason it came stock with a ported one. Any thoughts or opinions?