Manufacturer: Heckler and Koch (HK USA)

Family: MR556 Series

Model: MR556 A4

Type: Rifle

Item Group: AR Style Centerfire Rifles

Action: Semi-Auto

Caliber/Gauge: 223 Rem | 5.56 NATO

Finish: Gray Cerakote

Finish Type: Applied Finish

Stock/Grips: Collapsible / Folding Stock HK416 Slimline Furniture

Barrel: 16.5"

Overall Length: 33.25" to 36.5"

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

Capacity: 30 + 1

# of Magazines: 1 30 rd.

Sights: No Sights

Sight Type: None

Weight: 7.67 lbs.

Shipping Weight: 13.95

Addl Info: Short Stroke Gas Piston

Addl Info: HK416 Upper Receiver

MFG Model No: 81001308

UPC: 642230271982