I have had several ARs I have put together including my existing ARs that I have never had the spacing checked by a gunsmith and have had no issues.
It is up to your comfort level. It can eliminate concern or worry it was not set properly to begin with. It does not hurt and not sure what the cost is but BP Tactical is fairly reasonable to make sure everything is 5 by 5.
My specific issue I sold the barrel once, after it was replaced under warranty from the company. That person who bought it had concerns and I bought it back out of honor and will have Bert inspect and fix if needed before I resell it rather that than deal with a month long wait again from the company under warranty.
So.................anyone in the north Denver Metro area / Broomfield have 3 rounds I can borrow for a week or so?![]()