Check inventory for Heckler & Koch MR556 A4 AR-15 Complete Upper Receiver 223/5.56 Gun Parts at other vendors:
- $2,499.00 BattleHawk Armory
Description
Overview:
The HK MR556 upper receiver kit offers a factory-quality upper assembly designed to fit AR-15/M16/M4 platforms. Built to HK’s rigorous standards, this 11" kit pairs a precision 5.56mm barrel with a full-length Picatinny receiver interface for reliable accuracy, robust accessory mounting, and service-grade durability in a compact package.
Key Features:
Brand: HK (Heckler & Koch)
Series / Model: MR556 — Upper Receiver Kit
Category: Uppers
Caliber: 5.56mm
Firearm Fit: AR15 / M16 / M4
Color / Finish: Black
Barrel Length: 11"
Applications:
Ideal For: Compact carbine builds, patrol / duty uppers, and short-barrel rifle (SBR) style configurations (where legal).
Use Case: Builders and armorers seeking a factory-style upper with HK fitment and accessory-ready Picatinny interface.
Additional Features:
Accessory Ready: Full-length Picatinny receiver interface for optics, sights, and mounts.
Handguard / Mounting: Designed to accommodate standard accessory mounting and rail systems.
Durability: Finished in black to match common AR components and provide corrosion resistance.
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Compare prices for 642230270220 - Heckler & Koch MR556 A4 AR-15 Complete Upper Receiver 223/5.56 51000385 from all vendors
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$14.95 | |||
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Out Of Stock
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$24.99 | |||
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Calculated in Cart | |||
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MAP
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Most Firearms ship for FREE | |||
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$1,938.99
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14.31 | |||
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Free Shipping On Select Items - Free shipping on most guns! | |||
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19.99 | |||
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$2,179.00
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Free Shipping | |||
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$2,179.00
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$2,179.00
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Calculated in Cart | |||
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$2,179.00
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$0-$10 | |||
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MAP
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Low Shipping | |||
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$9.99 | |||
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Free Shipping Over $300 | |||
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$2,179.00
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FREE Shipping over $250, Firearms $13.95 flat rate S/H | |||
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$2,179.00
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no info | |||
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$2,179.00
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$7 Flat Rate Shipping | Free Shipping over $200 | Free Shipping on ALL Firearms and Suppressors! | |||
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See price at checkout | |||
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$2,238.75
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19.99 | |||
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$19.99 | |||
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$2,558.99
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Firearms & Suppressors $19.99 | Accessories $14.95 - $19.99 | |||
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$8.95 Shipping on all Orders (Except AK & HI), Ammo ships for $15.95 No tax outside OK | |||
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45.00 |
