Design for M4 Gear Box Ver2. . 2 different types of Hardware in one set. Replace the standard Button Head Screws of airsoft Rifle .
Package included: 10 x PM Screws(3mm Diameter x 8mm Lenght) 10 x Shim
PM Screw(3x8) Diameter : 3mm PM Screw(3x8) Lenght : 8mm Major Color : Black Weight with Package: 9g Manufacturer : AIP
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