Yes, the Strike Industries AR Enhanced Low Profile Steel Gas Block fits barrels with a 0.750" gas journal diameter and will be compatible with your M&P-15.
Yes, the Strike Industries AR Enhanced Low Profile Steel Gas Block could be used for an AR10.
Just make sure that you line it up perfectly because BA doesn't release their barrel specs due to proprietary reasons. We tried to ask them. However, we do have some builds with BA barrels and they run just fine.
Yes. The Strike Industries AR Enhanced Low Profile Steel Gas Block will work. However, you may need to dimple your barrel for the provided set screws if you do not already have a set screw style gas block.
Yes, however if you do not currently have a set-screw style gas block, you will need to dimple your barrel for the set screws. This is normal for these style of gas blocks.
.400 since it isnt included anywhere online I figured I would post it here. I used the SLR dimpling jig and it worked great. Hope this helps someone else.