Perfect gas block for replacing a2 front sight - Midwest Industries Low Profile Gas Block

this is a great pow profile gas block.I have them on both my my AR'S. One of them a daniel defense omego x 9" and the other has a Leapers UTG PRO model 4/15 9" on it. They both are slim rails and these gas blocks fit nicely in both of them with room to spare. I chose these gas blocks because, on both of my builds i was replacing a A2 front sight and all the other gas blocks only cover one of the rings on the barrel where the A2 was mounted and i didnt want to see the other on not covers nor have it rust. it a little extra weight but worth it to cover the hole area where the A2 sight was. they both work great