MARCK-15 HYDRA VIPERA 9mm SMG-9C MODULAR PISTOL
9mm Para. cal., direct blowback operation, 7 (mfg. 2015-2019) or 7.5 (new 2020) in. barrel, uses Colt SMG style magazines, aluminum MGI QCB upper receiver, aluminum lower receiver, Mil-Spec trigger, pistol buffer tube, quad rail handguard, ...