ChiHai 480 M150 Super Motor Gold Gen 10 these would be the best

these would be the best gears for anything firing 270-300 FPS (maximum)

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the Custom upgraded HLF ARP9 has been dubbed the ultimate CQB machine

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ChiHai 480 M150 Super Motor Gold Gen 10 these would be the bestGenuine ChiHai Super Motor! Lets just say you might want to have a fully upgraded gearbox before installing this one. This motor is suitable for a V2 gearbox. High Torque vs. High Speed Motors Features: Aluminum alloy CNC processing rear cover Axle sleeve built in ball bearing Hardened and tempered output gear Sintered NdFeb Magnets Out axis length: length 30. 5mm Outer diameter: 29. 6mm x 25mm * 88. 5mm Output bevel gear: 10 teeth D hole hardened