MR556A4 UPPER KIT 5.56MM 11"
Manufacturer Model Number: 51000385
Manufacturer: Heckler and Koch (HK USA)
Model: MR556A4 URK
Caliber: 223 Rem | 5.56 NATO
Type: Accessory-Uppers
Item Type: Accessory
Finish: Matte Black
Shipping Weight: 8.8
Feature: Includes Bolt and Buffer
Feature: M-Lok Handguard
Optic Adjustable Objective: false
Optic Reticle Illuminated: false