Very, very nice.

I manually cycled some Magpul dummy rounds through it; bolt hold open worked just fine.  We’ll see if any issues happen at the range.

The latest batch that is shipping have a fix or two different than the first batch "I believe".

I got the info when chatting with PWS while I was ordering something from them.

Owners be advised..........

The dust cover could, not pop open when firing resulting in the charging handle hitting the plastic cover hard.

The cause could be design of dust cover or a strong engagement of the plunger on the dust cover.

Before you fire with the dust cover closed, hand cycle the cover open and closed many, many times.

This seems to polish the surface where the plunger meets the port and improves the opening action of the cover.

I'm not the only one that observed this (handle hitting dust cover). It has been reviewed as an issue.

I haven't fired mine yet but confirmed the issue with hand cycles. After many cycles it gets better and better.