"VERY lightweight (5lbs tops). the gun is constructed of polymer so its pretty tough/solid. you can put any M4 magazine into it. there is also a bolt in the back you can pop out and open up the stock for a quick spring change which is nice. now for the bad but not much to say. one is that on the model i got, the charging handle is kinda iffy. i pulled on the thing a few times and the charging handle popped off from the metal bar that pulls it back, but its easy to fix so its no biggie. another thing is the polymer gearbox. dont be too alarmed Ares has made poly gearboxes for a long time so its nothing new; again i know its not metal but its as close as you can get. its really not a big deal to me but i thought id mention it just to be in depth about the gun. finally, the iron sights on this gun i wasnt too fond of; theyre accurate, but i just prefer red dots. id recommend this to anyone who wants a TAR but doesnt have $$ for the Ares model"