Most of you probably already know I bought l4zy's free-float rail, and also sent me a spare standard gas block/front sight. Well my brother and I went to town on it and chopped it all up and got it ready to be a low-pro gas block. Then we took off the flash hider and the crappy stock block that I had on the rifle (M&P15 OR). Here lies my dilemma. Once we took off the factory gas block, I realized the barrel was drilled for only one taper pin, not 2 like the standard gas block l4zy gave me. So what do I do? I really don't feel like drilling 2 holes in my barrel. Here are my crappy cell phone pics for reference.