Quick view Details AirTac Customs | sku: AIRTAC-ALU-CRBN- AirTac Customs | ALU CRBN Gearbox MAP: Now: $99.99 Choose Options Compare SALE Quick view Details Upgrade to CNC (UTC) | sku: UTC-GB-8MM-GRN Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green MAP: $149.99 Was: $149.99 Now: $104.99 Add to Cart Compare Quick view Details KWA | sku: KWA-CM4-Gearbox KWA PTS CM4 AEG Complete Gearbox MAP: Now: $125.00 Add to Cart Compare SALE Quick view Details RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare SALE Quick view Details Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAP: Was: $133.99 Now: $93.79 Choose Options Compare SALE Quick view Details G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare Quick view AirTac Customs | sku: AIRTAC-ALU-CRBN- AirTac Customs | ALU CRBN Gearbox AirTac Customs | ALU CRBN Gearbox An essential part reimagined by AirTac Customs - the ALU CRBN Gearbox is a lightweight gearbox for M4 rifle builds, now in CNC Aluminum. Our CRBN Gearbox enables you to use a CRBN Upper with ANY M4 HPA engine system!... MAP: Now: $99.99 Choose Options Compare SALE Quick view Upgrade to CNC (UTC) | sku: UTC-GB-8MM-GRN Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Features: CNC-machined aluminum shell for superior strength and precision fit Quick-change spring guide for fast FPS adjustments 8mm bearing holes for smoother gear operation and reduced... MAP: $149.99 Was: $149.99 Now: $104.99 Add to Cart Compare Quick view KWA | sku: KWA-CM4-Gearbox KWA PTS CM4 AEG Complete Gearbox KWA PTS CM4 AEG Complete Gearbox Features: Compatible with KWA AEG Variable and Recoil Non Cut-Off Version (excludes New KO Line). Complete gearbox designed for seamless replacement and performance. Does not include VPS (FPS adjustment system)... MAP: Now: $125.00 Add to Cart Compare SALE Quick view RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm RETRO Arms CNC Split Gearbox SR25 QSC | 8mm Features: Precision CNC machined from aircraft-grade aluminum 8mm QSC bearing slots for smooth operation Durable anodized finish for added longevity Quick spring change system for convenient... MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare SALE Quick view Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAC Airsoft HPA Gear Box V2 with Centering Pins Stone Grey Features: Precisely machine-milled for impeccable craftsmanship. Includes centering grub screws specifically designed for HPA engine installation. Gearbox screws provided for both halves,... MAP: Was: $133.99 Now: $93.79 Choose Options Compare SALE Quick view G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor This G&G OEM Combat Machine Gearbox Rebuild Kit with Motor comes from our HPA builds that we no longer need the internals for and are in factory installed new condition. Since these kits have been uninstalled from an AEG, they may have... MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare Compare Selected × OK
SALE Quick view Details Upgrade to CNC (UTC) | sku: UTC-GB-8MM-GRN Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green MAP: $149.99 Was: $149.99 Now: $104.99 Add to Cart Compare
Quick view Details KWA | sku: KWA-CM4-Gearbox KWA PTS CM4 AEG Complete Gearbox MAP: Now: $125.00 Add to Cart Compare SALE Quick view Details RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare SALE Quick view Details Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAP: Was: $133.99 Now: $93.79 Choose Options Compare SALE Quick view Details G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare Quick view AirTac Customs | sku: AIRTAC-ALU-CRBN- AirTac Customs | ALU CRBN Gearbox AirTac Customs | ALU CRBN Gearbox An essential part reimagined by AirTac Customs - the ALU CRBN Gearbox is a lightweight gearbox for M4 rifle builds, now in CNC Aluminum. Our CRBN Gearbox enables you to use a CRBN Upper with ANY M4 HPA engine system!... MAP: Now: $99.99 Choose Options Compare SALE Quick view Upgrade to CNC (UTC) | sku: UTC-GB-8MM-GRN Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Features: CNC-machined aluminum shell for superior strength and precision fit Quick-change spring guide for fast FPS adjustments 8mm bearing holes for smoother gear operation and reduced... MAP: $149.99 Was: $149.99 Now: $104.99 Add to Cart Compare Quick view KWA | sku: KWA-CM4-Gearbox KWA PTS CM4 AEG Complete Gearbox KWA PTS CM4 AEG Complete Gearbox Features: Compatible with KWA AEG Variable and Recoil Non Cut-Off Version (excludes New KO Line). Complete gearbox designed for seamless replacement and performance. Does not include VPS (FPS adjustment system)... MAP: Now: $125.00 Add to Cart Compare SALE Quick view RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm RETRO Arms CNC Split Gearbox SR25 QSC | 8mm Features: Precision CNC machined from aircraft-grade aluminum 8mm QSC bearing slots for smooth operation Durable anodized finish for added longevity Quick spring change system for convenient... MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare SALE Quick view Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAC Airsoft HPA Gear Box V2 with Centering Pins Stone Grey Features: Precisely machine-milled for impeccable craftsmanship. Includes centering grub screws specifically designed for HPA engine installation. Gearbox screws provided for both halves,... MAP: Was: $133.99 Now: $93.79 Choose Options Compare SALE Quick view G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor This G&G OEM Combat Machine Gearbox Rebuild Kit with Motor comes from our HPA builds that we no longer need the internals for and are in factory installed new condition. Since these kits have been uninstalled from an AEG, they may have... MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare Compare Selected × OK
SALE Quick view Details RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare
SALE Quick view Details Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAP: Was: $133.99 Now: $93.79 Choose Options Compare
SALE Quick view Details G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare
Quick view AirTac Customs | sku: AIRTAC-ALU-CRBN- AirTac Customs | ALU CRBN Gearbox AirTac Customs | ALU CRBN Gearbox An essential part reimagined by AirTac Customs - the ALU CRBN Gearbox is a lightweight gearbox for M4 rifle builds, now in CNC Aluminum. Our CRBN Gearbox enables you to use a CRBN Upper with ANY M4 HPA engine system!... MAP: Now: $99.99 Choose Options Compare SALE Quick view Upgrade to CNC (UTC) | sku: UTC-GB-8MM-GRN Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Features: CNC-machined aluminum shell for superior strength and precision fit Quick-change spring guide for fast FPS adjustments 8mm bearing holes for smoother gear operation and reduced... MAP: $149.99 Was: $149.99 Now: $104.99 Add to Cart Compare Quick view KWA | sku: KWA-CM4-Gearbox KWA PTS CM4 AEG Complete Gearbox KWA PTS CM4 AEG Complete Gearbox Features: Compatible with KWA AEG Variable and Recoil Non Cut-Off Version (excludes New KO Line). Complete gearbox designed for seamless replacement and performance. Does not include VPS (FPS adjustment system)... MAP: Now: $125.00 Add to Cart Compare SALE Quick view RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm RETRO Arms CNC Split Gearbox SR25 QSC | 8mm Features: Precision CNC machined from aircraft-grade aluminum 8mm QSC bearing slots for smooth operation Durable anodized finish for added longevity Quick spring change system for convenient... MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare SALE Quick view Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAC Airsoft HPA Gear Box V2 with Centering Pins Stone Grey Features: Precisely machine-milled for impeccable craftsmanship. Includes centering grub screws specifically designed for HPA engine installation. Gearbox screws provided for both halves,... MAP: Was: $133.99 Now: $93.79 Choose Options Compare SALE Quick view G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor This G&G OEM Combat Machine Gearbox Rebuild Kit with Motor comes from our HPA builds that we no longer need the internals for and are in factory installed new condition. Since these kits have been uninstalled from an AEG, they may have... MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare Compare Selected
SALE Quick view Upgrade to CNC (UTC) | sku: UTC-GB-8MM-GRN Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Upgrade to CNC UTC Quick Change CNC V2 Gearbox | 8mm / Green Features: CNC-machined aluminum shell for superior strength and precision fit Quick-change spring guide for fast FPS adjustments 8mm bearing holes for smoother gear operation and reduced... MAP: $149.99 Was: $149.99 Now: $104.99 Add to Cart Compare
Quick view KWA | sku: KWA-CM4-Gearbox KWA PTS CM4 AEG Complete Gearbox KWA PTS CM4 AEG Complete Gearbox Features: Compatible with KWA AEG Variable and Recoil Non Cut-Off Version (excludes New KO Line). Complete gearbox designed for seamless replacement and performance. Does not include VPS (FPS adjustment system)... MAP: Now: $125.00 Add to Cart Compare SALE Quick view RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm RETRO Arms CNC Split Gearbox SR25 QSC | 8mm Features: Precision CNC machined from aircraft-grade aluminum 8mm QSC bearing slots for smooth operation Durable anodized finish for added longevity Quick spring change system for convenient... MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare SALE Quick view Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAC Airsoft HPA Gear Box V2 with Centering Pins Stone Grey Features: Precisely machine-milled for impeccable craftsmanship. Includes centering grub screws specifically designed for HPA engine installation. Gearbox screws provided for both halves,... MAP: Was: $133.99 Now: $93.79 Choose Options Compare SALE Quick view G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor This G&G OEM Combat Machine Gearbox Rebuild Kit with Motor comes from our HPA builds that we no longer need the internals for and are in factory installed new condition. Since these kits have been uninstalled from an AEG, they may have... MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare Compare Selected
SALE Quick view RETRO Arms | sku: RA-7213 RETRO Arms CNC Split Gearbox SR25 QSC | 8mm RETRO Arms CNC Split Gearbox SR25 QSC | 8mm Features: Precision CNC machined from aircraft-grade aluminum 8mm QSC bearing slots for smooth operation Durable anodized finish for added longevity Quick spring change system for convenient... MAP: $197.99 Was: $197.99 Now: $149.99 Add to Cart Compare
SALE Quick view Mac Airsoft | sku: MAC-GBV2CP MAC Airsoft HPA Gear Box V2 w/ Centering Pins MAC Airsoft HPA Gear Box V2 with Centering Pins Stone Grey Features: Precisely machine-milled for impeccable craftsmanship. Includes centering grub screws specifically designed for HPA engine installation. Gearbox screws provided for both halves,... MAP: Was: $133.99 Now: $93.79 Choose Options Compare
SALE Quick view G&G | sku: RB-KIT-GG-CM G&G OEM Combat Machine Gearbox Rebuild Kit w/ Motor This G&G OEM Combat Machine Gearbox Rebuild Kit with Motor comes from our HPA builds that we no longer need the internals for and are in factory installed new condition. Since these kits have been uninstalled from an AEG, they may have... MAP: $39.99 Was: $39.99 Now: $19.99 Add to Cart Compare
