Heckler & Koch MR556 A4, Semi-automatic, AR, 223 Remington/556NATO, 16.5" Barrel, Anodized Finish, Black, M-LOK Free Float Handguard, Adjustable Gas Block, HK USA Enhanced Grip, HK416 Six Position Stock, Ambidextrous Controls, 30 Rounds, 1 Magazine 81000827

Specifications:

• Caliber: 5.56mm
• Stock Extended Length: 36.5 in
• Stock Retracted Length: 33.25 in
• Width: 3.07 in
• Height: 7.5 in
• Barrel Length: 16.5 in
• Weight: 7.67 lb
• Magazine capacity: 30
• Trigger Pull: 4.5 - 5.6 lb
• Barrel Profile: 6 lands & grooves right twist 1 in 7 in
• Sights: Optics ready