GEAR & APPAREL
Heckler and Koch (HK USA)
Heckler and Koch (HK USA) MR556A4 URK
MR556A4 UPPER KIT 5.56MM 16.5"
$2,179.00
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— Overview
MR556A4 UPPER KIT 5.56MM 16.5". Features: Includes Bolt and Buffer, M-Lok Handguard.
— Specifications
Built to Spec
Manufacturer
Heckler and Koch (HK USA)
Family
MR556 Series
Model
MR556A4 URK
Item Number
HK51000384
UPC
642230270213
Caliber
223 Rem | 5.56 NATO
Barrel Length
16.5"
Rate of Twist
1-in-7"
Finish
Matte Black
Finish Type
Black