5KU Stainless Steel Valve Knock for HI-CAPA GBB

5KU Stainless Steel Valve Knock for HI-CAPA GBB

Replace the standard valve knocker of airsoft pistol magazine 
Design for Gas Blow Back Airsoft Pistol 
Stainless Steel Construction

As always, upgrading GBB require necessary skill & technique, consult expertise if needed

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