Are you using an Adj gas block?

[Klem]

The main reason not to use adjustable gas if you don't need it is port erosion.

You just took an open port and put a choke over it, turning it into a combination chamber rather than the outlet for a manifold. There are ways to counteract that with nitriding and other processes, but I personally don't use Adjustable Gas if I don't need it.

Interesting, but I am wondering how an adjustable block damages the barrel to the extent it is an issue.

The gas port is a certain dimension and we put a partial choke on that...How does that cause damage to anything? If you are suggesting the port will now be widened how does that affect anything given the block is still sealing the port, and the adjustable gas is still delivering gas at the rate dictated by the user.

Surely the gas block will also be eroded along with the barrel if that were the case.

Are there any cases of adjustable gas block damaging the barrel to the extent it needs changing sooner than otherwise? Or accuracy suffers?