I have one. Experiences may vary. Mine is awesome! I heard what people were saying about the magazines so I was scared to pull the "trigger" at first. I think it more comes down to who builds it more than anything. I had Innovative Tactical Systems LLC, Made in USA, AR 15 uppers, piston operated tactical upper, 5.56, 6.8spc, custom precision barrels build my upper and have Cp products magazines. The only thing I have had is crappy ammo problems... I have had 3 rounds out of 500 that I have shot recently that just never went "bang."