i purchased this gun about 3 years ago from a friend. at the time they sold for $160. in the 3 years i have owned in i have had to do nothing to it. not even basic maintenance like a new piston, gears, or a new spring. it has a great rate of fire and is comfortable. the folding stock is a major plus for cqc situations. i will say the battery compartment is a little tight but thats not to much of a downside now that i use lipos. the mags are a little bulky not nearly as thin as a m4 but i think they look a hell of a lot cooler than any m4 mag. its been shooting around 375 with .25 since i bought it and the bb's fly straight as a arrow. all in all i give it 5 stars out of 5 from my (experiences)