VFC HK416 M4 AR15 GBB Aluminum Outer Barrel Extension Chamber VG20ADC040

Material: CNC-machined 7075 aluminum
Surface Treatment: Hard anodized (approx. 350 HB hardness – significantly tougher than stainless steel at 187 HB)
Finish: Shiny silver

This precision-machined component is a reinforced upgrade for the original plastic VFC part VG20ADC040, which is known to be fragile and prone to cracking during disassembly.

Key Features:

• Fixes Barrel Wobble: Effectively reduces or eliminates barrel wobble on the VFC HK416A5 GBB platform.

• Enhanced Compatibility: Slightly enlarged chamber bore (CB) to ensure drop-in compatibility with most aftermarket hop-up units—e.g., GHK chamber—without additional fitting or modification.

• Self-Centering Design: The internal taper of the CB helps center the barrel automatically, while the integrated barrel nut ensures perfect alignment and secure fit.

Compatibility:
Fits all VFC AR15, M4, and HK416 GBB models (including HK416A5).