The Colt AR15-A4 is a semi-automatic version of the rifle that started it all the M16.

Specifications:

• CALIBER: 5.56x45 NATO
• BARREL LENGTH (IN.): 20"
• BORE: Chromed 6 Grooves 1-7" RH Twist
• FRONT SIGHT: Adjustable Post for Elevation
• REAR SIGHT: Adjustable for Windage
• LENGTH: 39.5"
• WEIGHT: 7.71 lbs
• ACTION: Direct Gas System Locking Bolt
• FINISH: Matte Black