5KU B-31C Upper Handguard for AK - Black

CNC Upper Handguard B-31C for AK

Looking for a durable and lightweight upper handguard that replaces the original polymer one while offering a full-length 20 mm RIS rail for optics and accessories? Need a precisely CNC-machined part that fits standard AK / AKM rifles? Want a long handguard that provides more mounting space while maintaining the rifle’s balance? Then the CNC Upper Handguard B-31C by 5KU is the perfect choice. This upper handguard is specifically designed for AK / AKM replicas with the B-30 lower handguard. Its precise CNC machining ensures a tight and secure fit, providing a stable platform for red dots and other accessories. The lightweight aluminum reduces weight compared to steel components while maintaining strength and balance — ideal for modern AK builds. The B-31C is compatible only with the B-30 lower handguard.

The B-30 lower handguard shown in the photo is for illustration only (sold separately).

Key Features

• CNC-Machined Aluminum:
  Precisely crafted for perfect fit and long-lasting durability.
  
  
• Integrated 20 mm RIS Rail:
  Standard mounting interface for red dots and tactical accessories.
  
  
• Extended Length:
  Longer design offers more mounting options than the standard model.
  
  
• Lightweight Construction:
  Weighs only about 130 g while maintaining high rigidity.
  
  
• Front Sight Compatibility:
  Fits standard AK front assemblies; requires the B-30 lower handguard.
  
  
• Modern Upgrade:
  Ideal for AEG AK / AKM replicas seeking a modern, tactical appearance.

Technical Specifications

• Designed for: AK / AKM
• Length: 195 mm
• Weight: 130 g
• Material: CNC-machined aluminum

Package Includes

• CNC Upper Handguard B-31C for AK