The SilencerCo Delta 12x28 Black Adapter is specifically designed for the FN Five-seveN addressing the demand for superior pistol barrels. Crafted from durable 416R stainless steel and finished with a resilient black nitride coating this adapter ensures long-lasting performance even in the most challenging environments. Each threaded barrel includes a Thread Protector offering enhanced durability and protection. Trust in SilencerCo's unwavering dedication to quality and innovation with the Delta model tailored for those who demand reliability and precision.