The current gas block is a flat top railed one, it is held in place with one taper pin, now with the Vltor does it come with a gas tube? Is this gas tube the proper length? How much tolerance do I have when placing the new gas block gas port over the barrel gas port and is there a no-miss way to do that? How much torque do I apply to the set screws? Do i have to dimple the barrel? Are these aftermarket gas blocks good and deliver great service?-Im really concerned with proper placement of the gas block and gas tube length if you could hit on those points it will be greatly appreciated. I want a 9" instead of a 7"(I have a MI 7" drop in currently) which leads me to believe I will need a low profile gas block for the rail to sit over and want to get a Vltor GB-2SS set screw model to go under a 9" rail, either a DD/MI/Larue and still taking suggestions. Ive been adding to it and have decided I want a true free float rail. I am curious, I have a Smith and Wesson M&P15OR (Optics Ready) 16" barrel.
Hello everybody and Stickman you have already answered so many questions I have had here but I am struggling finding precise answers to my gas block questions.