Complete 8mm Reinforce Gearbox
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SKU: SRCUP26
Complete 8mm Reinforce Gearbox Shell for VersionII M4-AEGs. Includes M120 Spring, 8mm Ball Bearings, Steel Spring Guide, High Performance Piston, Metal Piston Head & Cylinder Head, 400FPS+ Drop-In gearbox upgrade.
MSRP: $180.00