Barnes Supressor Series Subsonic is a purpose-built ammunition line engineered for the coming surge in suppressor ownership featuring premium Sierra projectiles loaded to Barnes'exacting standards. Initial subsonic offerings use clean-burning propellants to minimize gas blowback and improve cycling in semi-auto platforms while delivering noticeably quieter shots and reliable function out of suppressor-ready platforms.Supersonic variants are planned for future release to broaden performance options, making Suppressor Optimized a product family that grows with customer needs. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.