I am hoping that some company
(ADCO I hope you are listening and can help us out) will make a shim (washer) the same thickness of the handguard cap to help take the guessing out of proper gas port alignment with gas blocks! It is frustrating when people take their new builds to the range to find out they have built a single shot
(pushed gas block up aginst shoulder)! LOL. Wish I still had my shop to make these! Been thinking about this for quite some time! M4QUADRAIL