So I purchased the AA 18" barrel - looks beautiful. I'm planning on using a Sentry7 Titanium adjustable gas block on it. Issue is, it appears that the AA barrel has a slightly smaller diameter (maybe ~0.25mm) in the middle of the gas block landing area on the barrel. You can zoom in on the gas block area to see what I'm talking about:
Measurements of the gas block landing area (total 46mm)
First section - (0.750" barrel diameter) gas port landing = 14mm long
Middle section (~.25mm smaller barrel diameter) = 18mm long
3rd section (0.750" barrel diameter) = 14mm long
Looking at AA's site, their low profile gas block looks to match up perfectly with this "valley" (and is exactly 46mm long):
But the SLR Sentry7 might not:
Has anyone used an adjustable gas block on the AA barrels? Am I just S.O.L. and need to use the AA block (boo!)? Or is there a way to shim the SLR block? Or should I not worry, and the set screw under the gas port will hold it just fine (assuming the other set screw hits the "valley" area cleanly)?
Thanks again for any help/comments!
Measurements of the gas block landing area (total 46mm)
First section - (0.750" barrel diameter) gas port landing = 14mm long
Middle section (~.25mm smaller barrel diameter) = 18mm long
3rd section (0.750" barrel diameter) = 14mm long
Looking at AA's site, their low profile gas block looks to match up perfectly with this "valley" (and is exactly 46mm long):
But the SLR Sentry7 might not:
Has anyone used an adjustable gas block on the AA barrels? Am I just S.O.L. and need to use the AA block (boo!)? Or is there a way to shim the SLR block? Or should I not worry, and the set screw under the gas port will hold it just fine (assuming the other set screw hits the "valley" area cleanly)?
Thanks again for any help/comments!
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