5KU CNC Aluminum 3.9 Middle Frame Type-4 for Marui Hi-Capa Airsoft ( GB-564 )

• CNC Aluminum construction
• Anodized matt finish
• 2011 marking, 3.9 inch version
• Length 160mm approx.
• 20mm Bottom rail
• Improved hammer housing version, includes stainless steel sear, valve knocker and pin set
• Suitable for Marui Hi-capa gas blow back pistol

**Airsoft Replica for Toy and Airsoft Use Only