I have owned my MMC now for almost a year now and have nothing but good things to say about this rifle. I have never had a misfire with ANY ammo. I have used Rem .223 and Tulammo .223. I also shoot reload through it with no problems at all. I paid $750 for it at the height of the craziness of the weapons ban. I'm glad I bought it. For no one knowing about them, everyone sure seems to be bashing them. When this company first started building AR's, they weren't doing that great of job and that's when MMC started getting bad reviews. The kinks have since been worked out and they shoot fine. I was skeptical when I first got mine, but figured that $750 was worth the risk during the time when I purchased it.