HK 81000827 MR556 A4 5.56x45mm 30+1 16.50" Black Threaded BBL, Black Pic Rail, M-LOK Handguard, 6 Position Black Synthetic Stock, Ambidextrous,Tactical Rifles

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.

Handguards:	M-LOK
Series:	A4
Width:	3.07"
Barrel Material:	Steel
Grooves:	6
Hand:	Ambidextrous
Stock Description:	6 Position
Weight Range:	7 lbs to 7.99 lbs
Height:	7.50"
Caliber:	5.56x45mm
Stock Material:	Synthetic
Operating System:	Gas Piston
Twist:	1:7"
Stock Finish:	Black
OAL:	36.50"
Safety:	Ambidextrous Safety Lever
Barrel Length:	16.50"
Thread Pattern:	5/8"x24
Action:	Semi-Auto
Capacity:	30+1
Max Capacity:	30
Metal Finish Group:	Blued/Black
Receiver Finish:	Black
Trigger Pull Weight:	4.50-5.60 lbs
Stock Finish Group:	Black
Sights:	None
Barrel Description:	Threaded
Barrel Finish:	Black
Weight:	7.67 lbs
Receiver Description:	Picatinny Rail
Model:	MR556