The MAC IX is a rugged modular 9mm PCC built for reliability and performance. It features a proven direct blowback system for minimal recoil and fast follow-up shots and accepts MP5-style magazines for dependable familiar feeding. With a monolithic upper full-length Picatinny rail and M-LOK handguard it's mission-ready-whether for competition defense or the range. Direct Blow Back Design MAC-5/MP5 Magazine Compatibility Paddle/Button Magazine Release Picatinny Rail Interface for Braces or Stock (All NFA Rules Apply) Machined Tri-Lug Suppressor mount 1yr Warranty/Lifetime Service Plan Includes: Hard Case - 2 Magazines - Cleaning Kit - Sling - Flash Hider - Owners Manual