This is a great gun ive had it for about 3 weeks and no problems, .12 grams do work but not very well. i would reccomend .20 gram bbs. This gun runs on green gas and gas consumption is the only con, each mag of green gas only lasts about 2 mags. If you have any more questions please leave a comment or send me a message. Also the hat in the background of the second pic is a german ww2 field cap.