Manufacturer: Heckler and Koch (HK USA)

Family: MR556 Series

Model: MR556 A4

Type: Semi-Auto Pistol

Item Group: AR Style Centerfire Rifles

Action: Semi-Auto

Caliber/Gauge: 223 Rem | 5.56 NATO

Finish: Black

Finish Type: Black

Stock/Grips: Collapsible / Folding Stock HK Endanced Ergonomic Grip

Barrel: 11"

Overall Length: 26.5"

Rate-of-Twist: 1-in-7"

Capacity: 10 + 1

# of Magazines: 1 10 rd.

Sights: No Sights

Sight Type: None

Weight: 6.61 lbs.

Shipping Weight: 11

Addl Info: Short Stroke Gas Piston

Addl Info: HK416 Upper Receiver

MFG Model No: 81001051

UPC: 642230269446