The legality of making SBR in WA is in limbo due to ambiguity in a recent amendment that was originally "intended" to enable SBR conversions, but did not explicitly state such. It was originally presumed that the definition of "possession" would be in-line with NFA, which does include the ability to "make", but that has not been the case so far. The issue is being addressed, but remains unresolved. So for now, WA ATF won't approve form 1 SBR apps. However, it will approve form 4 transfers, since that part of the law is uncontested.
Thus, given the situation, I am looking into utilizing an out-of-state NFA dealer who I could send my rifle to, to perform the conversion & send it back to my local FFL on a form 4 transfer. I'm also posting this in other state forums to get a list of potential FFL's who might be interested in doing this. My local dealer (no proessional affiliation) would also be potentially interested in making an arrangement with said out-of-state dealer to offer this as a service to other WA SBR applicants until the state law is remedied. With 41p looming, it would be an opportunity for those of us who want to get SBR ocnversoin if/before the NFA rule changes.
ETA: I've posted this in other state forums to try to compile a list of potential dealers who could offer this service.