HD15 ( S.R.O. with C.A.S.S. System) 10.5" Pistol

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The HD15 SRO with C.A.S.S. by Head Down Firearms, was designed to protect what you love most.. The Covert Assignment Support System, or C.A.S.S. (Patent Pending), provides School Resource Officers with a discreet method of carrying a rifle caliber pistol or a Short Barreled Rifle, ready for quick deployment. The insert is multi-configurable and acts as a holster for the HD15 pistol, or a scabbard for the HD15 SBR variant.  1 MOA or better accuracy guarantee. Transferable lifetime warranty. 

Features and accessories provided:

  • Forged Upper/ Lower
  • ALG Mil Spec Trigger
  • Salt Bath Nitride Bolt Carrier Group (MPI Tested)
  • 4150/4151 CrMoV barrel, Nitride finished, 10.5", 1-8 Twist
  • Rugged 3P Suppressor Adapter
  • BCM Mod 3 Grip
  • LAW Tactical Folding Stock Adapter
  • Vortex Optics SPARC AR
  • Streamlight ProTac Rail Mount HL-X Long Gun Light
  • Magpul Offset Scout Mount
  • Magpul MBUS front and rear sights. (Soon to ship with Samson metal folding front and rear sights)
  • HD M-Lok Handguard
  • M-Lok QD Swivels
  • M-Lok QD rail attachment
  • Blue Force Gear Vickers Padded 2 pt Sling
  • Ambidextrous Safety
  • Ambidextrous Tactical Charging Handle
  • H2 Buffer
  • Receiver Tensioning Device


C.A.S.S. - Covert Assignment Support System is a Mystery Ranch Backpack with a Kydex insert, CNC machined by C & G Holsters specifically for Head Down Firearms.