It's my understanding, based on feedback through Bullseye-L and by other shooters, that RRA's pistol building operation is basically Chuck - as in Chuck Larson actually builds these pistols himself. I know that that seems improbable, but it's what I've been told by several people who know a/o have spoken with him.
This is a large part of the reason that there's such a long lead time. It's also why the pistols seem to be better supported than the rifles w/ regards to customer service and repairs. He even goes out to Camp Perry personally to support RRA pistol shooters during the nationals.
But he's apparently brought on a few apprentices recently, so they may be increasing their output. This may be why their pistols are now promoted more prominently on their website.