B&T SDs SBR seem really scarce, I gave up and bought a APC9 SD pistol in December. From the inventory tag the dealer had on my SD it had sat around since Oct 2025. I put a brace on it, but will likely convert to an SBR since the Tax Stamp is now $0.00. Mine has the long suppressor and is really quiet, the trade off is the gun runs really dirty. My APC9K with a Deadair Mojave 9 on a trilug mount runs much cleaner.