An M-4 style optimization, down to the bayonet. 

Features:

• Easy to install
  
• Designed for comfort, control and superior weapon retention
  
• Constructed of high-strength carbon fibre filled polymer
  
• Six-position buttstock w/ 4 QD sling points
  
• Available with or without removable polymer bayonet
  
• Pistol grip with finger grooves provides a secure grip
  
• Incl. aluminium muzzle brake w/ Picatinny mount for gas block height sights
  
• Free floats any barrel contour including bull barrels 
  
• Lifetime warranty
  
• 2.4lbs./2.6lbs. with Bayonet