Don't know exactly what's inside it. Supposed to have reinforced gearbox, m130, upgraded gears, piston, piston head, metal hop up, 6.04 tight bore.
I would love a shorter magazine, but doubt they make them. My high cap came apart on the inside today and won't wind. As soon as the Classic Army and G&G mid caps start coming back in stock I will have plenty of mags.
I am very happy with it. It's got plenty of range and extremely accurate, especially for an airsoft aeg.
Sorry guys, no smaller M14 style mags unless you go custom by doing some metal work. Reason is that the M14 was suppose to be an all purpose weapon, sort of like the BAR, so the designers had no desire to make a smaller capacity magazine.
I've got a Leapers 3-9x50. I couldn't stand it. I was able to watch the entire flight path of the BB. It would leave the barrel, fly up 8 mil dots, curve and start falling out past 200 ft. I can hit 32oz Styrofoam cups at 100ft with the 1x. Only had the Leapers on for the first couple hundred BB's so everything wasn't seated yet.