The mr556 a4 short-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to run longer, with less maintenance and with less wear on internal components.Its adjustable gas regulator allows the operator to tune the action specifically for suppressed or unsuppressed operation.Fully ambidextrous controls, lighter weight and a slimmer profile make the new a4 easier to operate, manipulate and employ.
Action: Semi-Auto
Caliber: 5.56x45mm
Barrel Length: 16.50"
Capacity: 30+1
Safety: Ambidextrous Safety Lever
Oal: 36.50"
Weight: 7.67 lbs
Stock Description: 6 Position
Sights: None
Barrel Description: Threaded
Twist: 1:7"
Barrel Length Range: 16" to 16.99"
Weight Range: 7 lbs to 7.99 lbs
Hand: Ambidextrous
Stock Finish Group: Black
Metal Finish Group: Blued/Black
Action: Semi-Auto
Caliber: 5.56x45mm
Barrel Length: 16.50"
Capacity: 30+1
Safety: Ambidextrous Safety Lever
Oal: 36.50"
Weight: 7.67 lbs
Stock Description: 6 Position
Sights: None
Barrel Description: Threaded
Twist: 1:7"
Barrel Length Range: 16" to 16.99"
Weight Range: 7 lbs to 7.99 lbs
Hand: Ambidextrous
Stock Finish Group: Black
Metal Finish Group: Blued/Black
