866 S State St, Greenfield, IN $35 FFL Transfers
Open today until 6pm (317) 967-7172
Condition Red Tactical
Shop openuntil 6pm
Heckler & Koch MR556A4 11 inch black upper receiver kit with M-LOK handguard, bolt, buffer and spring

Getting it

  1. Order online and pick up in Greenfield
  2. Or have it shipped to your door. No FFL needed

Questions? Call the shop: (317) 967-7172

Heckler & Koch MR556A4 Upper Receiver Kit, 5.56, 11″ Barrel

$2,179.99

  • Upper Receiver
  • AR-15
  • 5.56 NATO

Fits

Get your accessories

View all that fit the AR-15

Matched by model and caliber. Always confirm fit (generation, optic cut, light, barrel length) before you buy, or ask us at the counter.

Out of stock

Product descriptions and specifications are computer generated from manufacturer and distributor information and may contain errors. Please confirm the details of UPC 642230270220 with the manufacturer before you buy. Condition Red Tactical is not responsible for errors in product information. By using this site or purchasing this product, you agree to our Terms of Service.

Specifications

Part TypeUpper Receiver
Caliber5.56 NATO
Barrel Length11"
Color / FinishBlack
ConditionNew
UPC642230270220

Product descriptions and specifications are computer generated from manufacturer and distributor information and may contain errors. Please confirm the details of UPC 642230270220 with the manufacturer before you buy. Condition Red Tactical is not responsible for errors in product information. By using this site or purchasing this product, you agree to our Terms of Service.

Description

Heckler & Koch MR556A4 upper receiver kit chambered for 5.56 NATO with an 11 inch barrel. The kit includes an M-LOK handguard for mounting accessories and comes with the bolt and buffer, so it is ready to fit to a compatible AR-15 lower.

Specifications

  • Model: MR556A4 URK
  • Manufacturer part number: 51000385
  • Caliber: .223 Remington / 5.56 NATO
  • Barrel length: 11 inches
  • Handguard: M-LOK
  • Finish: Matte Black
  • Included: Bolt and buffer

Reviews

There are no reviews yet.

Be the first to review “Heckler & Koch MR556A4 Upper Receiver Kit, 5.56, 11″ Barrel”

More for your AR-15