- 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: Collapsible / Folding Stock
- STOCK/GRIPS: HK416 Slimline Furniture
- BARREL: 16.5"
- OVERALL LENGTH: 33.25" to 36.5"
- RATE-OF-TWIST: 1-in-7"
- CAPACITY: 10 + 1
- # OF MAGAZINES: 1
- MAG DESCRIPTION: 10 rd.
- SIGHTS: No Sights
- SIGHT TYPE: None
- THREAD PATTERN: 1/2x28
- SPECIAL FEATURE: Threaded Barrel
- WEIGHT: 7.67 lbs.
- SHIPPING WEIGHT: 14.3 lbs.
- SAFETY FEATURES: Ambidextrous Safety Lever
- RECEIVER: Fully Ambidextrous Lower
- ADDL INFO: Short Stroke Gas Piston
- ADDL INFO: HK416 Upper Receiver
- ADDL INFO: M-LOK Handguard
- MFG MODEL NO: 81001309
- UPC: 642230272002
All sales are final
