M4 type retractable stock tube for RIS mount (STRIBOG) 5KU

5KU-320 Extendable Stock Tube for M4 on RIS – Black

The 5KU-320 aluminum extendable stock tube is designed for mounting M4-style stocks on airsoft guns equipped with a 20mm RIS / Picatinny rail. Its durable anodized aluminum construction ensures high wear resistance and long service life. The design allows length adjustment in 5 positions, providing optimal customization for different needs and situations. The adapter enables installation of M4 stocks even on platforms without a standard buffer tube interface and is compatible with most M4 buffer tube stocks. It mounts securely onto a 20mm RIS / Picatinny rail using a fixed attachment system.

Features

• 5KU-320 aluminum stock tube
• Designed for M4-style stocks
• 20 mm RIS / Picatinny rail mount
• 5-position length adjustment
• Durable anodized aluminum construction
• Compatible with most M4 buffer tube stocks
• Enables use without buffer tube interface
• Black color