Maxim Defense Industries SDX-510, Semi-automatic Rifle, SBR, 556NATO, 10.3 Threaded Barrel, Cerakote Finish, Black, 30 Rounds, 1 Magazine, Includes DSX-D Suppressor MXM-49787 The Maxim Defense SDX-510 combines the MDX:510 firearm platform with the rugged DSX suppressor to create a fully optimized, suppressed firearm system. Unlike standard threaded-on silencers, this integrated system is specifically tuned for each caliber and barrel length, delivering an incredibly smooth shooting experience with minimal gas exposure to the shooter. Featuring Maxim's DSX-D suppressor with M-Kore Technology, the SDX-510 offers unparalleled performance without barrel length restrictions. Built with military-grade materials, it increases reliability and extends the service life of your firearm, while being fully user-serviceable for easy maintenance. Once you experience the SDX series, plug-and-play solutions won't compare.