Hi Northwest Firearms! I've researched this topic on multiple forums, but would just like to hear directly from people in WA State as I know laws vary... I've been mostly hanging out in the handgun world, but would love to finally branch out to the rifle world. I'm thinking of making my own build by purchasing a complete BCM upper/lower assembly for my first rifle; either a 14.5" or 16" middy. I'm slightly confused as to what the law is regarding 14.5" barrels. Please be kind to my lack of knowledge on this subject, hence, I would love to clarify some topics with some of you experts on this forum. Also, please correct me at anytime if what I understand is incorrect. From what I understand and what I've been reading, 14.5" is considered a SBR. Well, anything less than 16" for that matter. Due to the bill that was signed (SB 5956), it was previous illegal but now is legal to purchase SBR in Washington State - though, it is still considered a NFA item if the flash hider is not permanently pinned to the barrel? As previously mentioned, I'm thinking of building either a 14.5" or 16" and will first be purchasing a complete upper from BCM. And here comes the questions: 1. Is it legal to purchase and ship a 14.5" upper to my home address? 2. Is it legal to own a 14.5" WITHOUT a pinned flash hider BEFORE I purchase a put it on a lower? 3. If I were to decide not to pin my flash hider, would it be considered a SBR. If so, would need to fill out correct forms for having a SBR and purchase a tax stamp for the rifle? 4. Should I just purchase a 16" upper for peace of mind? Thanks for all your help in advance, definitely appreciate it.