Anubis-Custom M4A1 RISII Upper Receiver Group For WE M4 GBB / AEG

This upper conversion kit does not include the Lower Receiver, Bolt, Charging Handle, or Magazines.
Easily upgrade your M4/M16 GBBR AEGR to the M4A1 RISII with enhanced Stainless Steel Inner-barrel and Hop-up.
Compatible with WE AR system V2 & V3 GBB / AEG Rifles.

Feature
- CNC-machined DD Style M4A1 RISIIaluminum handguard
- Precision CNC-machined 14.5-inch steel outer barrel
- CNC-machined steel barrel nut
- Low profile dummy gas block and gas tube
- Pre-installed VT INOX SS304 6.03mm inner barrel
- Pre-installed VT high-performance AEG rubber
About
This upper conversion kit does not include the Lower Receiver, Bolt, Charging Handle, or Magazines.

Easily upgrade your M4/M16 GBBR AEGR to the M4A1 RISII with enhanced Stainless Steel Inner-barrel and Hop-up.

Compatible with WE AR system V2 & V3 GBB / AEG Rifles.