Design for Hi-capa 5.1 Series Airsoft Gas Blow Back Pistol.
Aluminum Construction, more Robust and Light-Weight.
A round hole at the top.
With "AP" & "5.1" Marking on the top.
Replace the standard Spring Guide of airsoft pistol.


Material : Aluminum
Spring Guide Lenght : 100mm
Major Color : Blue
Weight with Package: 18g
Manufacturer : AIP