- Standard Motor Complete Upgrade Gearbox for S&T T21 Professional Series AEG Rifles Airsoft - Made out of metal. - Quick Change Spring System. - High strength metal alloy shell. - Ported brass cylinder. -Steel bushings. - Heavy duty fuse. - Comes with standard motor. - Suitable for S&T T21 Series Airsoft AEG. - Complete drop-in gearbox solution for those who are looking for a powerful, durable yet economical complete full metal gearbox. - Weight - Approx 819g (with motor) - Original Packing

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- CNC Aluminum Gearbox Shell For Classic Army A&K M249 Series AEG Rifles Airsoft - CNC machined aluminum construction. - 8mm Bearings. - Quick detachable bearing spring guide included. - Suitable for Classic Army / A&K M249 Series AEG Rifle. - Weight - Approx 440g - Original Packing

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- Battleaxe Version 2 V2 Gearbox Shell For Tokyo Marui Series AEG Rifles Airsoft - Full metal construction. - Does not come with screws. - Suitable for Tokyo Marui V2 AEG Rifle. - Weight - Approx 248g - Original Packing

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- CYMA Platinum Series EFCS Version ECU High Torque Motor QD Version 2 V2 Gearbox For MP5 Series AEG Rifles Airsoft Rear Wired - Made out of Aluminum-zinc alloy. - Complete Assembled Gearbox. - CNC aluminum cylinder. - CNC aluminum piston head. - CNC Gear. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Pre-built at the factory to ensure industry leading QC and parts quality. - 8mm ball bearings for longevity and performance. - Onboard electronic trigger (Electronic Circuit Unit ECU). - Wired to the rear with low-resistance silver-coated wire. - Suitable for CYMA Tokyo Marui MP5 AEG Rifles. - Weight - Approx 690g - Original Packing

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- CYMA Platinum Series High Speed Motor QD Version 2 V2 Gearbox For M4 M16 Series AEG Rifles Airsoft - Made out of Aluminum-zinc alloy. - Complete Assembled Gearbox. - CNC aluminum cylinder. - CNC aluminum piston head. - 8mm Version 2 gearbox shell with molded radiused cylinder window and reinforcement. - High speed neodymium magnet motor. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Pre-built at the factory to ensure industry leading QC and parts quality. - 8mm ball bearings for longevity and performance. - Low-resistance silver-coated wire. - Suitable for standard Tokyo Marui spec version 2 gearbox parts and upgrades. - Compatible with most Version 2 AEG., QBS system may not be compatible with all receiver types. - Weight - Approx 676g - Original Packing

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- CYMA Platinum Series EFCS Version ECU Standard Motor QD Version 2 V2 Gearbox For M4 M16 Series AEG Rifles Airsoft - Made out of Aluminum-zinc alloy. - Complete Assembled Gearbox. - CNC aluminum cylinder. - CNC aluminum piston head. - 8mm Version 2 gearbox shell with molded radiused cylinder window and reinforcement. - Standard neodymium magnet motor. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Pre-built at the factory to ensure industry leading QC and parts quality. - 8mm ball bearings for longevity and performance. - Onboard electronic trigger (Electronic Circuit Unit ECU). - Low-resistance silver-coated wire. - Suitable for standard Tokyo Marui spec version 2 gearbox parts and upgrades. - Compatible with most Version 2 AEG., QBS system may not be compatible with all receiver types. - Weight - Approx 695g - Original Packing

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- CYMA Platinum Series EFCS Version ECU High Torque Motor QD Version 2 V2 Gearbox For M4 M16 Series AEG Rifles Airsoft - Made out of Aluminum-zinc alloy. - Complete Assembled Gearbox. - CNC aluminum cylinder. - CNC aluminum piston head. - 8mm Version 2 gearbox shell with molded radiused cylinder window and reinforcement. - High Torque neodymium magnet motor. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Pre-built at the factory to ensure industry leading QC and parts quality. - 8mm ball bearings for longevity and performance. - Onboard electronic trigger (Electronic Circuit Unit ECU). - Low-resistance silver-coated wire. - Suitable for standard Tokyo Marui spec version 2 gearbox parts and upgrades. - Compatible with most Version 2 AEG., QBS system may not be compatible with all receiver types. - Weight - Approx 655g - Original Packing

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- CYMA Complete Assembled Gearbox with Motor For CYMA CM099 VSS VINTOREZ Russian Series AEG Rifles Airsoft - Made out of metal. - Comes with motor. - Designed for CYMA CM099 VSS VINTOREZ Russian AEG Rifles. - Weight - Approx 696g (with motor) - Original Packing

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- CYMA Platinum Series EFCS Version ECU High Torque Motor Version 2 V2 Gearbox For M4 M16 Series AEG Rifles Airsoft - Made out of Aluminum-zinc alloy. - Complete Assembled Gearbox. - Short-stroked steel SHS gears and full metal rack piston. - CNC aluminum cylinder. - CNC aluminum piston head. - 8mm Version 2 gearbox shell with molded radiused cylinder window and reinforcement. - High torque neodymium magnet motor (capable of 26 RPS with an 11.1V LiPo battery). - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Pre-built at the factory to ensure industry leading QC and parts quality. - 8mm ball bearings for longevity and performance. - Onboard electronic trigger (Electronic Circuit Unit ECU). - Low-resistance silver-coated wire. - 350-400 FPS estimated FPS (individual parts and build will affect FPS output). - Suitable for CYMA Platinum Series EFCS Version V2 M4 M16 AEG Rifles. - Compatible with standard Tokyo Marui spec version 2 gearbox parts and upgrades. - Compatible with most Version 2 AEG., QBS system may not be compatible with all receiver types. - Weight - Approx 653g - Original Packing

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- CYMA Platinum Series ETU Complete Version 3 V3 Gearbox with Motor For CYMA MP5 PDW SMG9 Series AEG Rifles Airsoft - Made out of Aluminum-zinc alloy. - Complete Assembled Gearbox. - Short-stroked steel SHS gears and full metal rack piston. - CNC aluminum cylinder. - CNC aluminum piston head. - 8mm gearbox shell with molded radiused cylinder window and reinforcement. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - 8mm ball bearings for longevity and performance. - Electronic Trigger Unit. - Wired to the rear with low-resistance silver-coated wire. - Suitable for CYMA Platinum Series MP5 PDW SMG9 AEG Rifles. - Weight - Approx 696g - Original Packing

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- Golden Eagle Original Complete Gearbox For S&T JG Golden Eagle M240 LMG Series AEG Rifles Airsoft - Made out of metal. - Suitable for S&T / JG Golden Eagle M240 LMG AEG Rifle. - Original Packing.

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- QD Quick Change Spring System Reinforced 8mm Gearbox Shell For A&K AR M4 M16 Series AEG Rifles Airsoft Front Wired - Full metal construction. - Micro switch trigger. - Front Wired. - Suitable for A&K AR M4 M16 Series AEG Rifles. - Weight - Approx 363g - Original Packing

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- CYMA Platinum Series Complete QD Version 3 V3 Gearbox with Neodymium Magnet High Speed Motor For CYMA Platinum Series AK Alfa Series AEG Rifles Airsoft - Made out of reinforced metal. - Complete Assembled Gearbox. - On-board electronic trigger. - CNC aluminum cylinder and cylinder head. - Full steel gears and piston teeth. - CNC steel gear. - 8mm bushing. - Low resistance wire. - Neodymium magnet high speed motor. - 8mm gearbox shell with molded radiused cylinder window and reinforcement. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Designed for CYMA CM103 AK Alfa Series AEG Rifles. - Suitable for CYMA Platinum Series AK Alfa AEG Rifles. - Compatible with standard Tokyo Marui V3 AK AEG Rifles. - Weight - Approx 645g - Original Packing

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- CYMA Platinum Series Complete QD Version 3 V3 Gearbox with High Speed Motor For CYMA Platinum Series AK Alfa Series AEG Rifles Airsoft - Made out of reinforced metal. - Complete Assembled Gearbox. - On-board electronic trigger. - CNC aluminum cylinder and cylinder head. - Full steel gears and piston teeth. - 8mm bushing. - Low resistance wire. - High speed motor. - 8mm gearbox shell with molded radiused cylinder window and reinforcement. - Quick-change spring system allows for easy spring changes without needing receiver disassembly. - Designed for CYMA CM103 AK Alfa Series AEG Rifles. - Suitable for CYMA Platinum Series AK Alfa AEG Rifles. - Compatible with standard Tokyo Marui V3 AK AEG Rifles. - Weight - Approx 627g - Original Packing

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- CYMA CNC Aluminum 8mm QD Gearbox Shell For CYMA Platinum Series SR25 QBS Series AEG Rifles Airsoft - Made out of CNC 6061 aluminum. - 8mm QD Gearbox Shell. - Comes with screws. - Suitable for CYMA CM098 SR25 Series AEG Rifles. - Color - Red - Weight - Approx 141g - Original Packing

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- CYMA CNC Aluminum 8mm QD Gearbox Shell For CYMA Platinum Series M4 QBS Series AEG Rifles Airsoft - Made out of CNC 6061 aluminum. - 8mm QD Gearbox Shell. - Comes with screws. - Suitable for CYMA CM097 M4 Series AEG Rifles. - Color - Blue - Weight - Approx 123g - Original Packing

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- ARMY FORCE 8mm Complete QD Version 2 V2 Gearbox For Jing Gong JG M4 M16 Series AEG Rifles Airsoft Front Wired - QD Transform gearbox is a new generation gearbox with all the unique & great features of a STAR / ARES (QR gearbox) and Deepfire gearbox (Micro switch). - This gearbox has an unique shell, spring guide, selector plate, cut-off lever and trigger, all other parts are compatible with regular AEG Version 2 8mm M4 gearboxes. - For JG (Jing Gong) M4 standard gearbox. - Version 2 gearbox with front wire. - Easy power upgrade system. - Quick release spring and spring guide for easy power adjustment / spring replacement. - Micro switch operation for shorter & better electric range. - Faster trigger response design. - Featuring spring release function. - Full metal reinforced chassis / gearbox with metal gear set. - Weight - Approx 540g - Original Packing

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- ARMY FORCE 8mm Bearing QD Version 2 V2 Complete Gearbox For M4 M16 Series AEG Rifles Airsoft Front Wired - Version 2 gearbox with front wire. - Easy power upgrade system. - Quick release spring and spring guide for easy power adjustment / spring replacement. - 2pcs 8mm ball bearings, 4pcs metal bushings - Weight - Approx 500g - NOTE: Self-installation required. - Original Packing

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