The B&T SPC9 PDW variant is available with 4.5-inch and 6.5-inch barrels, both designed for compact maneuverability in close-quarters environments. The 4.5-inch version is the most compact, ideal for discreet carry and confined spaces, while the 6.5-inch version offers slightly increased velocity and accuracy at extended ranges. Both configurations feature a telescoping rail-type stock, a non-reciprocating side-mounted folding charging handle in addition to the rear AR-style charging handle, and tri-lug suppressor compatibility for quick attachment of SMG suppressors. The hydraulic buffer system significantly reduces recoil, enhancing control and follow-up shots. The interchangeable non-serialized polymer lower receivers allow compatibility with B&T, Glock, and SIG P320 magazines, making it adaptable to users’ sidearm preferences. The AR-style controls, including ambidextrous bolt releases, thumb safeties, and magazine releases, ensure familiarity for those accustomed to AR-platform firearms. The stubby M-Lok/NAR handguard provides multiple mounting options, and flip-up sights come standard. The SPC9 PDW balances compact size, modularity, and ease of operation, making it well-suited for CQB, vehicle operations, and personal defense while maintaining compatibility with standard AR accessories.