HK 81000579 MR556 A1 5.56x45mm NATO 16.50" 30+1, Black, Adjustable Stock, Polymer Grip, Gas Piston Driven System $3,348.75
HK 81000580 MR556 A1 5.56x45mm NATO 16.50" 10+1, Black, Adjustable Stock, Polymer Grip, Gas Piston Driven System $3,348.75