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Heckler & Koch Semi-automatic Rifle

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Used Heckler & Koch MR556A4 5.56mm 16" barrel with factory soft case

Rifles

Used Heckler & Koch MR556A4 5.56mm 16" barrel with factory soft case

Heckler & KochSemi-AutomaticUPC 686680000000

The Used Heckler & Koch MR556A4 is a premium 5.56mm rifle featuring a precision 16" barrel, delivering reliable performance and accuracy in a lightweight platform. Supplied with its original factory soft case, this firearm combines tactical versatility with durability, ideal for a wide range of shooting applications. Its ergonomic design and proven HK quality make it a top choice for enthusiasts and professionals alike. Compact yet powerful, the MR556A4 excels in both close quarters and mid-range engagements, making it a versatile addition to your collection.

ManufacturerHeckler & Koch
TypeSemi-Automatic
UPC686680000000
Item #
$3,129.95
In StockUsed
Call to Reserve · (724) 935-7410 Back to listings

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Technical Overview

CategoryRifles
ManufacturerHeckler & Koch
ModelSemi-Automatic
InventoryIn Stock
Item Number
UPC686680000000

Specifications

  • Manufacturer: Heckler & Koch
  • Model: MR556A4
  • Caliber: 5.56mm NATO
  • Barrel Length: 16 inches
  • Condition: Used
  • Included: Factory soft case
  • Action: Semi-automatic
  • Material: High-quality steel and polymer components
  • Sights: Not specified (typically iron sights or optic-ready)
  • Magazine Compatibility: STANAG magazines
  • Furniture: Ergonomic pistol grip and adjustable stock
  • Overall Length: Approximately 35 inches
  • Weight: Approximately 7.9 lbs

FAQs

Is the barrel original and in good condition?

Yes, the 16" barrel is original and has been inspected for excellent condition.

Does it come with any warranty?

Being a used item, it typically comes without a manufacturer warranty; please verify with the seller.

What accessories are compatible with the MR556A4?

The rifle supports standard AR-15 style accessories and HK proprietary parts.

How heavy is the rifle with the barrel?

The MR556A4 weighs approximately 8.2 lbs (3.7 kg) with the 16" barrel.

Is the factory soft case included?

Yes, the rifle comes with the original factory soft case for transportation and storage.

What is the barrel twist rate?

The barrel has a 1:7" twist rate, optimized for stabilizing a wide range of 5.56mm bullets.

Can this rifle be used for competitive shooting?

Absolutely, it is ideal for 3-gun and other practical shooting sports.

Is this rifle suitable for beginners?

While user-friendly, it is best for shooters familiar with semi-automatic rifles.

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