This is the stock gearbox that is installed into the Echo 1 XCR. The XCR features a unique gearbox that is compatible with most V2 parts. The XCR gearbox features a high quality polycarbonate piston with the second to last tooth removed for improved gear engagement. The cylinder, cylinder head, aluminum ported piston head, bearing spring guide, and high speed gears are all high quality version 2 parts. The Echo 1 XCR also features many parts that are unique to the gun including the wiring harness, air seal and a split style gear box.
Having a spare gearbox can be extremely beneficial for multiple reasons. The Echo 1 XCR features a split style gearbox which allows the user to quickly and easily change the upper assembly out. This gives the user the unique advantage to quickly swap the upper if it becomes damaged such as a striped piston. The user can also have a high and low fps upper assembly for indoor and outdoor play.
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