5KU ZB-31 Upper Handguard for AK – Top RIS Rail (B-30 Compatible)

Upgrade your AK platform with enhanced modularity using the 5KU ZB-31 Upper Handguard. Designed to pair perfectly with the B-30 lower handguard, this component replaces the standard gas tube cover and adds a top-mounted 20mm RIS rail for optics and tactical accessories.

Built for players who want a modern ZenitCo-style AK setup, the ZB-31 provides a stable and practical mounting solution while maintaining a streamlined and balanced rifle profile. It’s the ideal addition for improving aiming speed and expanding your customization options.

Key Features

• Integrated top RIS / Picatinny rail for optics and accessories
• Designed for B-30 lower handguard compatibility
• Replaces standard gas tube cover on AK platforms
• Compact and lightweight design for optimal balance
• Modern tactical upgrade for AK AEG and GBBR rifles

Enhanced AK Customization

The ZB-31 upper handguard allows you to mount red dot sights, micro optics, or other accessories directly above the barrel, improving sight alignment and target acquisition. When combined with the B-30 lower handguard, it creates a cohesive and highly functional full RIS rail system.

This setup is particularly effective for players looking to build a modernized AK for CQB or dynamic field play, offering both improved ergonomics and a tactical aesthetic.

Complete your setup with optics from our red dots and scopes collection or explore more upgrades in our external parts. Discover compatible rifles in our airsoft rifles range.

Package Includes

• 5KU ZB-31 Upper Handguard

Specifications

Brand	5KU
Product Type	AK upper handguard / gas tube cover
Compatibility	AK platforms with B-30 lower handguard
Rail System	20 mm RIS (top rail)
Color	Black
Body Material	Metal