Sig just released their Piston AR the Sig516. It is pretty affordable and looks to have a ton of good things about it. I am looking to off load my SR-556C because I cannot change the flash hider without cutting it down and sinking some cash in it. It is an awesome rifle .5 lbs lighter then the standard SR-556 and has a nice fluted barrel but I want a BattleComp for better control and less rise. The Sig looks to be pretty good on this too! I am considering an LWRC but they are so similiar it isnt funny. the bolt is a cross between a SR-556 and an LWRC. I like the rails and the fact that I can mount a sling damn near anywhere. It has the same treatment on the barrel as the LWRC. Even if I trick the Sig out to be like the LWRC M6A2 is is 400 less! Not to mention it has a better regulator. Sig looks to have done a great job on this rifle and it has a lifetime as well. I have dealt with sig on a few rifles and they did a decent job. Not a S&W job but still good.