Hi Capa Hicapa 5.1 or 4.3 WE Airsoft Armorer Works EMG Series Piston Head Rubber

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This Is Designed To Replace The Original Piston Head Rubber That Comes From WE / Armorer Works / EMG Hi Capa Series Piston Head Rubber. Although The Original Piston Rarely Disintegrates, It is Always Good To Have A Back Up Spare. Upon Installation, Just Simply Push The Flat Bottom of The Piston Head Rubber To The Screw of That Blow Back Housing Unit. I Have Only Tried On WE / Armorer Works Model, Have Not Tried On Other Manufacturers Hi Capa Model Such As Tokyo Marui or KJWorks. There Are Two Files, That One That Is February 2022 Revised Has Slightly Taller Dimension Than The Other File. Print Both, and See Which One Suits You Better. PLEASE NOTE : PRINT THIS MODEL USING FLEXIBLE PTU FILAMENT ONLY.