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Airsoft Gun Internal Upgrade Parts

Gearbox, Hop Up Units, Inner Barrels, ETC!

Airsoft GI has worked with enough airsoft guns to know that what’s inside really counts. If your airsoft gun has a broken mechanism or has simply fallen behind the times, our internal upgrade parts will have you back in the game. We have airsoft gun internal parts for AEGs, spring sniper rifles and gas blowback pistols and rifles. Add aftermarket AEG cylinder heads to maximize compression or install a precision inner barrel for better accuracy. Replace a burned-out stock motor with a standard OEM motor or upgrade to a high torque model that can handle other internal upgrades.

Our gas airsoft internal upgrades include recoil springs that increase felt recoil, loading nozzles that improve durability and high flow valves to increase FPS velocity. You can upgrade your spring rifle as well with parts that give your shots more distance and more precision. We carry parts from all the leading airsoft parts manufacturers such as Action Army, Danger Werx, G&G, Modify, SHS, and Lonex – and we make some of our own internal airsoft parts. Full tech support comes with every purchase, so you can turn to us if you encounter troubles while you work.


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Guns Modify EVO Complete Steel Trigger Box for Tokyo Marui M4/M16 MWS GBBR

Guns Modify EVO Complete Steel Trigger Box for Tokyo Marui M4/M16 MWS GBBR

$168.90$152.01

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Guns Modify CNC Aluminum Magazine Release Extension For Tokyo Marui MWS M4 M16 GBBR (Red)

Guns Modify CNC Aluminum Magazine Release Extension For Tokyo Marui MWS M4 M16 GBBR (Red)

$25.90$23.31

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Guns Modify CNC Aluminum Magazine Release Extension For Tokyo Marui MWS M4 M16 GBBR (FDE)

Guns Modify CNC Aluminum Magazine Release Extension For Tokyo Marui MWS M4 M16 GBBR (FDE)

$25.90$23.31

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Guns Modify CNC Aluminum Magazine Release Extension For Tokyo Marui MWS M4 M16 GBBR (Silver)

Guns Modify CNC Aluminum Magazine Release Extension For Tokyo Marui MWS M4 M16 GBBR (Silver)

$25.90$23.31

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Guns Modify Steel Hop-Up Base for Tokyo Marui M4 MWS GBBR

Guns Modify Steel Hop-Up Base for Tokyo Marui M4 MWS GBBR

$87.90$79.11

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Guns Modify CNC Complete Hop-Up Adjuster Set for Tokyo Marui M4 MWS GBBR

Guns Modify CNC Complete Hop-Up Adjuster Set for Tokyo Marui M4 MWS GBBR

$78.90$71.01

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TAPP Airsoft TM M4 MWS Carbon Fiber Feedlip and Gasket Set for HPA Adapters

TAPP Airsoft TM M4 MWS Carbon Fiber Feedlip and Gasket Set for HPA Adapters

$15.00$13.50

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TAPP Airsoft TM AK Carbon Fiber HPA Adapter Feedlip and Gasket Set

TAPP Airsoft TM AK Carbon Fiber HPA Adapter Feedlip and Gasket Set

$15.00$13.50

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TAPP Airsoft Carbon Fiber M4 Magazine HPA Adapterfor Vorsk VMP-2 (Competition)

TAPP Airsoft Carbon Fiber M4 Magazine HPA Adapterfor Vorsk VMP-2 (Competition)

$159.00$143.10

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Lancer Tactical 13:1 High Speed Steel Gear Set for AEG

Lancer Tactical 13:1 High Speed Steel Gear Set for AEG

$30.00$27.00

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Lancer Tactical 16:1 Steel Gear Set for AEG

Lancer Tactical 16:1 Steel Gear Set for AEG

$30.00$27.00

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Lancer Tactical 18:1 Standard Steel Gear Set for AEG

Lancer Tactical 18:1 Standard Steel Gear Set for AEG

$30.00$27.00

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Zion Arms 22K RPM Brushless DC Motor (Blue)

Zion Arms 22K RPM Brushless DC Motor (Blue)

$115.00$103.50

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Zion Arms 45K RPM Brushless DC Motor (Red)

Zion Arms 45K RPM Brushless DC Motor (Red)

$115.00$103.50

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Eshooter Kestrel V2 SE Electronic Trigger Unit (ETU) for V2 Gearbox (Front Wired)

Eshooter Kestrel V2 SE Electronic Trigger Unit (ETU) for V2 Gearbox (Front Wired)

$43.99$39.59

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Eshooter Kestrel V2 Electronic Trigger Unit (ETU) for V2 Gearbox (Front Wired)

Eshooter Kestrel V2 Electronic Trigger Unit (ETU) for V2 Gearbox (Front Wired)

$62.99$56.69

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Zion Arms 35K Brushless Motor Long Type

Zion Arms 35K Brushless Motor Long Type

$108.99$98.09

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Prometheus Tokyo Marui NGRS SOPMOD M4 Sealing Nozzle NEO

Prometheus Tokyo Marui NGRS SOPMOD M4 Sealing Nozzle NEO

$45.00$40.50

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Prometheus EG Stainless Steel Inner Barrel 370mm 6.00mm for Tokyo Marui M4A1 MWS

Prometheus EG Stainless Steel Inner Barrel 370mm 6.00mm for Tokyo Marui M4A1 MWS

$69.00$62.10

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Prometheus EG Stainless Steel Inner Barrel 370mm 6.03mm for Tokyo Marui M4A1 MWS

Prometheus EG Stainless Steel Inner Barrel 370mm 6.03mm for Tokyo Marui M4A1 MWS

$69.00$62.10

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Atlas Custom Works V2 Airsoft CNC BILLET Gearbox Shell

Atlas Custom Works V2 Airsoft CNC BILLET Gearbox Shell

$110.00$99.00

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Mechlabs HPA Airsoft Flo-J regulator (Gray)

Mechlabs HPA Airsoft Flo-J regulator (Gray)

$96.00

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Disclaimer:

All airsoft guns are required to have the tip (1/4 inch) of the barrel permanently colored in blaze orange. No person may openly display or expose any imitation firearm (replica firearm), in a public place. The term "public place" means an area open to the public or exposed to public view and includes streets, sidewalks, bridges, alleys, plazas, parks, driveways, parking lots, automobiles, whether moving or not, and buildings open to the general public, including those that serve food or drink, or provide entertainment, and the doorways and entrances to buildings or dwellings and the grounds enclosing them.

Any person who changes, alters, removes, or obliterates any coloration or markings that are required for by any applicable state or federal law or regulation, for any imitation firearm (replica firearm), or device in any way that makes the imitation firearm (replica firearm) or device look more like a firearm is guilty of violating the state or federal law.

By accessing the Site, you certify that you are older than 18 years of age or the age of majority where you live, whichever is older; that you are the owner of any credit card used to purchase on items on the Site; that you are familiar with all local laws in your area affecting your legal right to access airsoft products; that any products you buy are for your own private enjoyment and that you will NEVER share these products with a minor in ANY WAY.