Heckler & Koch MR556A1 Upper Receiver Kit Matte Black
Specifications
Weight 12.4 pounds
Material Aluminum upper receiver and handguard; steel barrel
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Description
Product Overview
The Heckler & Koch MR556A1 Upper Receiver Kit is a purpose-built 5.56x45mm upper assembly designed for a precision-focused AR-15-style build. It features a 16.5" barrel with a 1-in-7" twist rate and an M-LOK handguard for versatile mounting options, finished in matte black. The kit includes the bolt and buffer, making it a complete upper receiver option for compatible lower receivers.
Key Features
- 16.5" 5.56x45mm barrel for an MR556A1-style configuration
- 1-in-7" twist rate to support common 5.56 performance projectiles
- M-LOK handguard for flexible accessory mounting
- Matte black finish for a low-glare, durable exterior
- Includes bolt and buffer for a ready-to-install upper build
Build out your MR556A1-inspired setup with a HK-pattern upper receiver kit engineered for reliability and fitment.
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- SKU:
- 81000584
- UPC:
- 642230262607
- BUDS ID:
- 415015127
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Retail Availability
Bud's Gun Shop - Lexington, KY
1105 Industry Road, Lexington, KY 40505
Bud's Gun Shop - Sevierville, TN
2270 Two Rivers Blvd, Sevierville, TN 37876
Uncle Lee's - Greenville, KY
820 Main St, Greenville, KY 42345
