I just noticed that my gas block set screws are touching my hand guard. It is a YH low profile clamp on gas block. The hand guard I am using is the Midwest Industries Gen 2. It looks like it is barley touching one of the set screws. Would it be ok to file off the edge of the set screw or should I try something different?
My free float handguard is not free floating
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It doesn't have to, especially for a gun that isn't being run on high-volume, like a 3-gun blaster, unless that's what you need.
You can either dimple it, or use red loc-tite when fastening the gas block to the barrel. You should be using red loc-tite for the set screws on a set-screw gas block anyway.
What I do, and it's a pain, is check for fit of the block to the barrel and journal, then check for a gas circuit with air. The gas block then is pulled off, and loc-tited if there isn't a dimple. On my 16" AA Grendel, I use a clamp-on adjustable gas block, and have never had issues with it. My gun simply runs. It has an APEX rifle-length handguard that fits easily over my gas block, however.
For your case, you probably need loc-tite, which should not be introduced into the gas port. Degrease the snot out of your barrel and gas block, the screws, and proceed, or have a competent smith who knows AR's perform the work for you.
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