In Stock
H&K MR556 A4 5.56mm 11" Upper Receiver Kit for AR15
Sold byBereli•Posted Apr 28, 2026
Compare prices for HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 11" Barrel$1,999.00
Price and stock data refresh continuously from Bereli.
Deal Summary
- Currently in stock.
- Caliber: 223/5.56
- Category: gear
- UPC: 642230270220
- SKU: 51000385
- Brand: Hk
Price History
Deal Details
HK MR556 A4 Upper Receiver Kit for AR15/M16/M4, 11" Barrel, 5.56mm, Black 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 Rece
Other Offers for This Product
Active offers from your catalog for HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 11" Barrel.
Comparing 6 retailers carrying this product
Lowest Price: $1,993.00
Highest Price: $2,179.00
You Save: $186.00
Avg Discount: 6% off
HK 51000385 MR556 Upper Rcvr Kit 5.56mm for AR15/M16/M4,Upper
Heckler & KochHinterland OutfittersSKU/UPC: 235037
$1,993.00
View at Hinterland Outfitters
HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 11" Barrel
HkMidwayUSASKU/UPC: 714547
$2,179.00
View at MidwayUSA
HK MR556 A4 11 Complete Upper Receiver Kit 5.56 NATO CHF Barrel Piston System Free Float Rail Black
Heckler & Koch, Inc.BattleHawk ArmorySKU/UPC: 642230270220
$2,179.00$2,499.00Save 13%
View at BattleHawk Armory
Heckler and Koch MR556 A4 Upper Receiver/Barrel Assembly 5.56 11 Barrel
Heckler And KochGrabAGunSKU/UPC: GAG_51000385-178701
$2,179.00$2,499.00Save 13%
View at GrabAGun
HK UPPER RECEIVER KIT MR556A4 11''
Heckler & KochOptics PlanetSKU/UPC: 13-UFH-51000385
$2,179.00$2,499.00Save 13%
View at Optics Planet