M4 Shark Bros Lower Receiver 15" Octarms Keymod Rail , Black

Features:

• EMG HELLBREAKER Sharps Bros. Licensed Custom Receivers
• 10" Keymod Rail System
• AMOEBA Stock & Motor Grip
• CMC Flat Trigger
• Flip Up Front/Rear Sights
• 
  

Specifications:

• 380-420 FPS with 0.20g BBs
• Full Metal Construction
• Custom Billet Receivers
• Keymod & Picatinny/Weaver/20mm Rail System
• 380mm Inner Barrel
• 14mm+ Threaded Outer Barrel
• ARES Amoeba Version II Gearbox
• ARES Amoeba Electronic E.F.C.S.  Programmable Trigger
• LiPO Ready
• Battery/Charger Not Included
• 300 BB High Capacity Magazine Included
• ~805mm Long