AA .50 Beowulf 12" Upper in stock

Just to be perfectly clear;

Does this upper simply replace a normal .223 upper on any average AR-15?

Nothing else is required?
 
Do you know if it is a standard .750" diameter gas block? I want one of these, but would have to change the gas block and forend for esthetic reasons.
 
No it won't. We can get you a low profile gas block from AA. The inside diameter is inside diameter of .890. We just sold the last gas block we have. Should be able to get it within 2 months.
 
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