The HK-USA MR556 A4 chambered in 5.56x45mm, its short-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to run longer, with less maintenance and with less wear on internal components than direct-impingement ARs. Its adjustable gas regulator allows the operator to tune the action specifically for suppressed or unsuppressed operation. Fully ambidextrous controls, lighter weight and a slimmer profile make the A4 easier to operate, manipulate and employ. Includes one 10rd magazine.
- Manufacturer:
- Heckler & Koch / H&K
- Manufacturer Part Number:
- 81001033
- Action:
- Semi-Auto
- Additional Feature 1:
- Short Stroke Gas Piston
- Additional Feature 2:
- HK416 Upper Receiver
- Additional Feature 3:
- M-LOK Handguard
- Adjustable Objective:
- False
- Barrel Length:
- 16.5"
- Barrel Length Range:
- 16" to 16.99"
- Caliber/Gauge:
- .223 REM/5.56 NATO
- canDropship:
- False
- Capacity:
- 10 + 1
- Drilled and Tapped:
- False
- Finish:
- Black
- Finish Type:
- Black
- Grip Material:
- Collapsible / Folding Stock HK416 Slimline Furniture
- Grip Type:
- HK416 Slimline Furniture
- Hand:
- Ambidextrous
- Illuminated Reticle:
- False
- NFA Thread Pattern:
- 1/2x28
- Number of Magazines:
- 1 10 rd.
- Overall Length:
- 33.25" to 36.5"
- Product Type:
- Rifle
- Rate of Twist:
- 1:7"
- Receiver:
- Fully Ambidextrous Lower
- Safety:
- Selector Switch
- Scope Cover Included:
- False
- Sights:
- No Sights
- Special:
- Threaded Barrel
- Stock Finish Group:
- Black
- Weight Range:
- 7 lbs to 7.99 lbs
- Location:
- At Warehouse
