AIP Aluminum 5.1 Recoil Spring Guide Plug (Black) For Marui Hi-Capa 5.1 GBB #AIP007-MH-BK UMAREX This is the best suitable

This is the best suitable to ultimate user to optimise the chamber setting and maintain stability

For MARUI G19 Gen3 GBB use onlyIt has to use with GUARDER Steel Leaf Recoil Spring (OPTIONS)

-- For Tokyo Marui G17 / G18C / G17Custom Series Airsoft Gas Blow Back Pistol

Material : Aluminum/Nylon/Steel

Color: PINK

AIP Aluminum 5.1 Recoil Spring Guide Plug (Black) For Marui Hi-Capa 5.1 GBB #AIP007-MH-BK UMAREX This is the best suitableFit for Tokyo Marui Hi Capa 5. 1 Series GBB Pistol Aluminum Construction (CNC Machined) All inessential parts has been remove to keep the lightweight Supreme Quality & Lightweight Achieved As always, upgrading GBB require necessary skill & technique, consult expertise if needed Available Colors: Black, Silver, Gold, Purple & Red Built Material : Aluminum Item Code : AIP007 MH BK