HK MR762A1 LONG RIFLE PACKAGE III 7.62X51MM RIFLE WITH VORTEX VIPER PSTII 3-15×44 – 81000498

Taking an essentially standard MR762A1 (caliber 7.62×51 mm NATO) semi- automatic rifle, Heckler & Koch USA turns it into a more effective precision rifle by an astute addition of the right optics and accessories. A Vortex Viper PSTII 3-15×44 FFP MRAD, HK G28 adjustable cheekpiece buttstock, and LaRue Tactical BRM-S bipod are the primary add-ons that make the MR762A1 Long Rifle Package (LRP) more than a sum of parts.

A semi-automatic rifle originally developed from the fully automatic HK417, the MR762A1 LRP employs the same HK proprietary gas piston operating system found on current HK rifles and carbines, using a “pusher” rod in place of the gas tube normally found in AR15/M16/M4-style firearms.

HK MR762A1 LONG RIFLE PACKAGE III – Precision Redefined

The HK MR762A1 Long Rifle Package III in 7.62×51mm NATO is the epitome of German engineering meeting modern battlefield technology. Chambered for one of the world’s most respected long-range calibers, this rifle package delivers a blend of military-grade performance, match-level accuracy, and tactical versatility that stands apart in the precision rifle market.

This complete rifle package (Part Number: 81000498) is enhanced with the Vortex Viper PST Gen II 3-15×44 riflescope, ensuring you have not just a firearm, but a ready-to-deploy precision shooting solution. Designed for marksmen, tactical shooters, competitive long-range enthusiasts, and professional operators, the MR762A1 Long Rifle Package III delivers unparalleled shooting confidence.

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1. The HK Legacy – From Military Roots to Civilian Precision

The MR762A1 is derived from Heckler & Koch’s legendary HK417 battle rifle, a platform proven in military service around the world. While the HK417 serves elite military units, the MR762A1 adapts that DNA into a semi-automatic precision rifle for civilian, law enforcement, and competitive applications.

Key HK advantages include:

• German Engineering Excellence – HK’s commitment to metallurgy, machining tolerances, and quality assurance.

• Proven Reliability – Field-tested gas piston system that thrives in adverse conditions.

• Match-Grade Performance – Designed for sub-MOA accuracy when paired with premium ammunition.

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2. Chambered in 7.62×51mm NATO / .308 Winchester

The MR762A1 Long Rifle Package III is chambered in the time-tested 7.62×51mm NATO caliber (commercially known as .308 Winchester). This cartridge is a favorite among snipers, hunters, and competitive shooters for its:

• Extended Effective Range – Consistent terminal performance past 800 yards.

• Excellent Ballistic Coefficient – Stable in various wind conditions.

• Versatility – Effective for both precision target shooting and large game hunting.

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3. Gas Piston Operating System

Unlike direct impingement rifles, the MR762A1 employs HK’s short-stroke gas piston system, similar to that used in the HK416. This system:

• Keeps carbon fouling away from the bolt carrier group

• Enhances reliability in extreme environments

• Reduces heat transfer to critical components

• Provides smoother cycling and less felt recoil

This is a major reason why the MR762A1 has such a reputation for durability and reliability.

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4. Barrel Excellence – Cold Hammer Forged Precision

The MR762A1 Long Rifle Package III features a cold hammer-forged (CHF) barrel made from HK’s proprietary steel. Benefits include:

• Exceptional Longevity – CHF barrels resist wear for thousands of rounds.

• Consistency – Uniform rifling for predictable accuracy.

• Corrosion Resistance – Superior to standard stainless barrels in harsh conditions.

The barrel’s match-grade profile is designed to balance stiffness and weight, reducing barrel whip for consistent sub-MOA groupings.

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5. Vortex Viper PST Gen II 3-15×44 Scope – Tactical Clarity

The Package III includes the Vortex Viper PST II 3-15×44 riflescope, a high-performance optic perfect for mid- to long-range engagements.

Scope Highlights:

• Magnification Range – 3× for close-range clarity, 15× for precision at extended ranges.

• Objective Lens – 44mm for excellent light transmission.

• Illuminated Reticle – Enhances target acquisition in low light.

• First Focal Plane (FFP) – Accurate holdovers at any magnification.

• Rugged Construction – Waterproof, fog-proof, and shock-resistant.

This optic transforms the MR762A1 into a turnkey precision platform.

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6. Ergonomics and Modularity

Heckler & Koch designs rifles with shooter comfort and adaptability in mind. The MR762A1 features:

• Free-Float M-LOK Handguard – Allows mounting of bipods, lasers, grips, and accessories without affecting barrel harmonics.

• Fully Adjustable Stock – Fine-tune length of pull and cheek height for optimal eye alignment.

• Ambidextrous Controls – Safety selector and magazine release accessible to both right- and left-handed shooters.

• Picatinny Rail System – Ready for optics, night vision, or thermal scopes.

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7. Performance on the Range and in the Field

The MR762A1 excels in:

• Tactical Marksman Roles – Law enforcement countersniper or designated marksman applications.

• Long-Range Competition – PRS or tactical rifle matches.

• Hunting – Perfect for elk, deer, and other medium to large game.

• Defensive Scenarios – Serious precision in critical situations.

With the Vortex Viper PST II, expect rapid target acquisition and pinpoint accuracy at any distance.

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8. Complete Specifications

Rifle:

• Model: HK MR762A1 Long Rifle Package III

• Caliber: 7.62×51mm NATO / .308 Winchester

• Operation: Short-stroke gas piston, rotating bolt

• Barrel Length: 16.5” or 20” (depending on configuration)

• Twist Rate: 1:12

• Weight: Approx. 10 lbs (unloaded, without optic)

• Finish: Matte black anodized

• Stock: Fully adjustable precision stock

• Handguard: Free-float M-LOK

• Trigger: Match-grade 2-stage

• Magazine: 10- or 20-round detachable box magazine

Optic:

• Model: Vortex Viper PST Gen II 3-15×44

• Magnification: 3-15×

• Reticle: EBR-2C (FFP, illuminated)

• Tube Size: 30mm

• Adjustment Graduation: 0.1 MRAD or ¼ MOA (depending on version)

• Parallax: Adjustable from 20 yards to infinity

• Eye Relief: 3.4 inches

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9. Why Choose the MR762A1 Long Rifle Package III

When you invest in this rifle, you’re not just buying a firearm — you’re securing a precision-engineered, combat-proven, competition-ready system. Benefits include:

• No Guesswork – Rifle and optic professionally paired.

• Unmatched Reliability – HK piston system plus German craftsmanship.

• Accuracy – Sub-MOA potential with match ammo.

• Resale Value – HK rifles maintain exceptional value over time.

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10. Maintenance and Longevity

HK rifles are built for endurance, but routine care ensures optimal performance:

• Cleaning – Piston system requires less frequent cleaning than DI rifles, but keep bolt and chamber spotless.

• Lubrication – Use high-quality gun oil for moving parts.

• Barrel Care – Use a bore guide and proper cleaning rod to protect the crown.

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11. Legal & Compliance Considerations

Before purchasing, verify:

• Local and State Laws – Barrel length, magazine capacity, and features may be restricted.

• FFL Transfer – As a firearm, the MR762A1 must be shipped to a licensed Federal Firearms License (FFL) dealer for legal transfer.

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12. Conclusion – The Gold Standard in Semi-Auto Precision

The HK MR762A1 Long Rifle Package III is not an entry-level rifle — it is an investment in unmatched quality. Whether your goal is tactical operations, long-range competition, or serious hunting, this package delivers turnkey precision from day one. The synergy between HK’s MR762A1 platform and Vortex’s Viper PST II optic ensures you’ll have the confidence to take the shot — and make it count.HK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLEHK MR762A1 LONG RIFLE

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