5KU B-30 CNC Handguard for AK, Long - Black

CNC Lower Handguard B-30 for AK

Looking for a durable and lightweight handguard to replace your original polymer one while adding a full-length 20 mm RIS rail for accessories? Need a part that’s precision CNC-machined and fits standard AK / AKM rifles? Want a long version handguard that gives you extra mounting space while maintaining perfect balance? Then the CNC B-30 lower handguard from 5KU is the right choice. The B-30 long variant is designed for classic AK / AKM replicas (not suitable for short AK-74U models). Thanks to precise CNC machining, it fits tightly on the rifle body and provides a sturdy base for mounting accessories. The integrated 20 mm RIS rails at 3, 6, and 9 o’clock allow for grips, bipods, lights, and other tactical gear. The lightweight aluminum body reduces overall weight compared to steel parts while keeping the rifle balanced — perfect for modern AK builds. The B-30 is also compatible with B-31C or ZB-31C upper handguards.

The ZB-31C upper handguard shown is for illustration only (sold separately).

Key Features

• CNC-Machined Aluminum:
  Precision-engineered for perfect fit and durability.
  
  
• Integrated 20 mm RIS Rails:
  Standard RIS interface for grips and tactical accessories.
  
  
• Long Variant:
  Extended handguard providing more mounting space than the original.
  
  
• Lightweight Design:
  Only 260 g with high structural strength.
  
  
• Front Sight Compatibility:
  Fits standard AK front assemblies; not suitable for AK-74U or compact models.
  
  
• Universal Upgrade:
  Ideal for AEG AK/AKM replicas aiming for a modernized look.

Technical Specifications

• Designed for: AK / AKM (long variant)
• Dimensions: 255 × 53 × 38 mm
• Weight: 260 g
• Material: CNC-machined aluminum

Package Includes

• CNC Lower Handguard B-30 for AK