First of all I would shop around. There are many other good companies in the industry that have great barrels Rock River Arms being one of them. The barrels are made by Wilson Barrel Company on the east cost and are in no way affiliated with Wilson Combat. They also have a 16" Stainless Steel Barrel that is in 1:8 twist and a tac driver. 1/2 to 3/4 MOA. I do not know who makes Wilson Combat barrels for them at the present. Also if you are considering putting a standard front sight on the barrel you do not have the proper fixtures to hold the barrel while it is being drilled for the standard A Post Front Sight assembly. If you are putting a weaver style gas block or flip up front sight and gas block assembly on a barrel you are good to go. On the barrel pictured, if you should be going to use standard handguards do not forget the end cap since it acts as a spacer for proper Gas Block and Gas Port location. I think the RRA Barrel with A post and Bayonet Lug is around $245.00So without the assembly should be a little less. Please feel free to ask us for additional information. There are a lot of good barrel companies out there that have fine products. I am not that sold on Wilson Combat unfortunately.