as long as any semi keeps cycling ammo ,whats to worry.i just bought one,couldn't wait for marstar,though i'll be ordering another when they're here.i've already feild stripped it and have to say i'm impressed with the receiver,barrel and op rod.ya the stock is soft,i've already put a small ding in it ,lol.i'm going to try multiple applications of double boiled linseed oil on it.i don't believe from the forums here, and from what i see in my rifle,that there will be any problems keeping it as is. the one thing you might want to do is replace the op spring with a usgi,i've heard this helps to keep it cycling ammo without any problems.