5KU B-31L SPORT UPPER AK HANDGUARD

The 5KU B-31L Sport Upper AK Handguard is a modern tactical upgrade designed for airsoft replicas based on the AK platform, providing improved accessory mounting capability and a contemporary Russian-inspired appearance.

Developed as a replica of the well-known Zenit-style upper rail system, it enhances both functionality and realism on modernized AK builds.

Manufactured from high-quality CNC-machined aluminum, the B-31L combines lightweight construction with excellent structural strength, ensuring long-term durability even under demanding field conditions.

Its solid design maintains a secure fit while improving overall weapon handling and stability.

The handguard features a low-profile integrated Picatinny top rail, allowing users to mount optics or other tactical accessories on AK replicas that would otherwise lack a stable rail interface.

This significantly expands customization options while preserving a streamlined and functional aesthetic.

Designed to work in combination with compatible extended lower handguards such as the B-30 series, the B-31L creates a complete modular rail system suitable for both AEG and GBB airsoft rifles.

Lightweight, durable, and highly modular, the 5KU B-31L Sport Upper Handguard is an ideal external upgrade for players seeking improved optics mounting capability and a more contemporary AK configuration.

Specifications:

- Platform Compatibility: AK-series airsoft replicas (AEG / GBB)

- Material: CNC-machined aluminum

- Rail System: Integrated low-profile Picatinny top rail

- Color: Black

- Length: approx. 195–200 mm

- Weight: approx. 120–130 g