Early Century built gun. All inch pattern, not sure if r1a1 l1a1 or all that jazz. Comes with 2 metric mags, they wobble but they work. Guy I got it from couldnt get it to cycle, turns out that the problem was that the gas tube wasnt screwed in all the way. Fixed that and havent had a problem since, like setting 3 with the cheap crap I have been shooting, about 80 rounds thus far. Asking $850 I am in olympia. Also comes with the original carry handle and top cover. Trades I am looking for: stripped AR lowers, glocks/XD's, 357's and saigas.