Classic Army Microgun that has been lightly used and upgraded, extensive internal work has been done to reduce friction on barrel, and prolong the life of the nylon polymer. Internally all of the squared edges have been rounded off to reduce friction of the barrel assembly, allowing it to spin more freely and without eating away at the other body parts Green gas tube has been removed. All barrels have been polished, witg maple leaf 75 degree buckings installed. Giving you a bit more range than stock microguns. Trigger assembly has been retooled to ensure that it always engages the motor and barrel assembly properly. Basically most of the cut corners that Classic Army took to reduce the cost has been addressed. The only things we could not fix were the nozzles or the grub screws for nubs. Paypal only! NO TRADES!