The Heckler and Koch MR556A1 75th Anniversary 5.56mm rifle in Tropentarn camo (model 81001003) is a limited edition semi automatic modern sporting rifle that blends HK416 DNA with a desert ready finish for shooters who want both performance and collectability. This MR556A1 5.56mm platform is built for duty grade reliability, hard use at the range, and long term ownership value for enthusiasts and HK fans.
Key Features
- Model: Heckler and Koch MR556A1 75th Anniversary, part number 81001003.
- Caliber: 5.56x45mm NATO, compatible with .223 Remington.
- Action: semi automatic, short stroke gas piston operated.
- Operating system: HK proprietary gas piston with solid operating “pusher” rod.
- Capacity: 30 plus 1 rounds, typically shipped with four 30 round magazines.
- Barrel length: 16.5 inch heavy contour barrel.
- Barrel construction: cold hammer forged steel barrel made from high grade cannon steel.
- Barrel finish: black steel.
- Twist rate: 1 in 7 inch, six groove rifling.
- Receiver material: aluminum receiver.
- Receiver finish: Tropentarn camo with integral Picatinny rail on top.
- Handguard: free float M-LOK compatible handguard with Tropentarn camo finish.
- Stock: black synthetic telescoping adjustable stock.
- Grip: black polymer pistol grip.
- Sights: shipped without fixed sights, optics ready with full length Picatinny top rail.
- Overall length: approximately 33.9 to 37.68 inches.
- Weight: approximately 8.6 pounds unloaded.
- Trigger pull weight: about 7.64 pounds.
Special Features
- Civilian semi automatic descendant of the HK416 series, sharing the core operating system and barrel technology.
- Closed short stroke gas piston system keeps hot gases and carbon fouling out of the receiver for cooler and cleaner running in adverse conditions.
- Cold hammer forged barrel with unlined bore and 6 groove profile tuned for long service life and strong accuracy.
- Limited 75th Anniversary edition with Tropentarn Cerakote style camo and special markings, with production limited to a small run for added collector appeal.
- Free float M-LOK handguard allows solid mounting of lights, lasers, bipods, and barricade stops without contacting the barrel.
- Full length Picatinny rail provides generous space for red dot sights, LPVOs, magnifiers, and night vision or thermal optics.
- Typically includes four 30 round magazines, making the HK MR556A1 75th Anniversary Tropentarn rifle range ready right out of the box.
Practical Benefits
- Well suited for serious shooters and collectors who want a 5.56mm rifle that combines HK416 heritage, premium construction, and a distinctive Tropentarn finish.
- The short stroke piston system helps the MR556A1 75th Anniversary 5.56mm stay cleaner over long carbine classes, training cycles, or extended range sessions.
- Free floated cold hammer forged barrel and rigid M-LOK handguard provide a stable platform for accurate fire in competition, patrol style drills, or defensive training.
- Adjustable stock and ambidextrous safety selector make the Heckler and Koch MR556A1 75th Anniversary Tropentarn a solid fit for different shooter sizes and modern shooting positions.
- Tropentarn camo finish and anniversary markings give this rifle strong collector and display value while remaining fully capable for home defense, ranch or property use, and hard range work.
The Heckler and Koch MR556A1 75th Anniversary 5.56mm rifle model 81001003 in Tropentarn camo is a dependable option for serious training, defensive use, and building a standout HK centered rifle collection.
| MANUFACTURER | HECKLER & KOCH |
| MODEL | MR556A1 |
| CALIBER | 5.56MM |
| TYPE | RIFLE |
| PREMIUM | YES |