Suppressed SBRs and AR pistols demand ammunition built specifically for the job. Hornady SBR Suppressed Ammo delivers optimized supersonic velocity, cleaning-burning performance and proven reliability - giving your compact platform everything it needs to perform. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases. FeaturesOptimized progressive-burning propellants deliver ideal supersonic velocity while balancing pressure for reliable performance in compact platforms. Carefully selected bullets provide versatility across multiple applications and deliver reliable, consistent performance for today's modern, compact platforms.Rifles run cleaner and longer with clean-burning propellants that reduce fouling in the action, gas system and suppressor.