Heckler & Koch

H&K MR556 A4 5.56mm NATO 16.5in 10rd Semi-Auto Rifle (81000828)

Heckler & Koch H&K MR556 A4 5.56mm NATO 16.5in 10rd Semi-Auto Rifle (81000828) - Complete Rifle - view 1
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This is a serialized firearm.

Heckler & Koch

Overview

The Heckler & Koch H&K MR556 A4 5.56mm NATO 16.5in 10rd Semi-Auto Rifle (81000828) is a complete rifle. Compare prices from multiple merchants and find the best deal.

Specifications

MPN81000828
PlatformAR-15
Caliber5.56 NATO
Gas System LengthRifle
Thread Pitch1/2x28
Action TypeSemi-Auto
Twist Rate1:7
ColorBlack
Barrel Length16.5
ComplianceStandard

Available Merchants(1)

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Sportsmans Outdoor Superstore
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$3,450
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August 2026 on GunPartPicker

Heckler & Koch H&K MR556 A4 5.56mm NATO 16.5in 10rd Semi-Auto Rifle (81000828) ranked #17 of the 162 complete rifles builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since April 2026. All time, it ranks #24 of the 433 complete rifles builders have added.

Today the one retailer we track is out of stock. Listed prices start at $3,449.99 at Sportsmans Outdoor Superstore for when it comes back.

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Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers

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