Do I need a gunsmith to install a low-pro gas block? Right now I have a standard A2 front sight on there, and I'm going to be switching over to a free float rail. I have the troy gas block and everything ready to go, it has two hex nuts on the bottom of it. From what I've read I feel like I'm more than capable enough but I want some human responses first. I was able to assemble the entire lower myself with relative ease.
Here's what it looks like:
Here's what it looks like:

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