EMG x Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for M4 - Blue gbbr and fully compatible with most

and fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use

sold separately

as it's fully adjustable with its straps

NVG mount and side mounts for accessories

EMG x Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for M4 - Blue gbbr and fully compatible with mostPrecision machined from a block of billet EN AW 7075 T651 aluminum Quick change spring guide system Durable anodized finish Reinforcement in key stress points to counter rapid wear from high performance parts Pre radiused cylinder windows helps evenly distribute impact force Deeper wire channels along base of gearbox EMG Logo engraved on side of gearbox Manufacturer: EMG x Retro Arms CZ Specifications: Compatibility: For Tokyo Marui, G&P, Matrix and