Colt's model AR15A4 semi-automatic rifle is chambered for 5.56 NATO (223 Remington) and has a 20" barrel. This model has a black A2-style stock and black metal finish. It comes with a detachable carry handle and a 30-round PMAG Magazine.

Colt Mfg AR15A4 A4 223 Rem, 5.56x45mm NATO 30+1 20" Black Rec/Barrel Black A2 Fixed Stock Black Polymer Grip Right Hand

Caliber: 223 Rem
Model: A4
Stock Material: Synthetic
Action: Semi-Auto
OAL: 39.50"
Hand: Right
Sights: A2 Front, Carry Handle Rear
Barrel Finish: Black
Muzzle: A2 Flash Hider
Twist: 1:7"
Gun Platform: AR-Style
Magazine Type: AR-15
Grips: Black Polymer
Receiver Material: 7075-T6 Aluminum
Safety: Manual Thumb
Stock Description: A2 Fixed
Barrel Description: Chrome Moly Vanadium
Barrel Length: 20"
Receiver Finish: Black
Trigger: Single-Stage
Weight: 7.70 lbs