AR9 Pistol Build Kit – 9MM 4″ Barrel

$399.99 $309.99

A great start to your 9mm pistol build.

Just add a lower receiver and a handguard/rail of your choice! Compaitbile with Colt AND Glock Pattern Lowers.

In stock



  • Mil-Spec Upper receiver
  • 9MM Bolt Carrier Group Black Nitride – Colt AND Glock Pattern Compatibility
  • Standard Charging Handle
  • Ejection Port/Dust Cover Assembly
  • Forward Assist Assembly
  • 9mm 4″ Pistol Length Barrel 1/10 Twist – Black Nitride
  • Muzzle Brake (Birdcage Design)
  • Pistol Buffer Tube
  • Buffer Spring
  • Buffer
  • Steel End Plate
  • Steel Castle Nut
  • Foam Buffer Pad
  • Spike’s Tactical Lower Parts Kit – Mil-Spec