3.5" AR .223/5.56 Short Buffer Tube System | Anodized Black

3.5" AR-15 Short Buffer Tube System – Anodized Black

The 3.5" short buffer tube system is engineered for compact AR-15 builds, making it ideal for .223 / 5.56 pistol builds, SBR configurations, and minimalist setups where space and weight matter. Built to OEM dimensions and tolerances, this system supports reliable cycling when paired with the correct short buffer and spring.

Compact & Durable Design

Precision machined from high-grade aluminum, this short buffer tube delivers strength, corrosion resistance, and consistent performance in demanding conditions. Its compact 3.5" length makes it a go-to option for builders looking to reduce overall footprint without sacrificing function.

Anodized Black Finish

Finished in durable anodized black, this buffer tube system offers long-lasting protection against wear and corrosion while maintaining a clean, low-profile look. For custom color builds, Cerakote options are available under separate product listings.

What’s Included

• 3.5" short buffer tube (pistol-length)
• Castle nut (hardened steel)
• Receiver end plate (standard or QD option)
• Buffer retainer & spring
• Recommended short buffer (based on selection)

Built for Compact AR Setups

This short buffer tube system is ideal for:

• AR-15 pistol builds (.223 / 5.56)
• Short-barreled rifle (SBR) configurations
• Minimalist or PDW-style builds

Complete Your Build

Pair this system with compatible AR-15 buffer tubes or browse lower parts to complete your build with properly matched components.