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Airsoft Gun Upgrade & Maintenance Parts

Keep Your Airsoft Gun In Top Condition!

Airsoft GI has been the leading North American airsoft parts store since 2003, and here you’ll find everything you could possibly imagine for routine maintenance, emergency repairs and performance airsoft upgrades. We have the largest selection of parts and accessories for taking care of your favorite airsoft gun or rebuilding an older model. Our OEM replacement section has genuine factory airsoft parts that come directly from the manufacturer, and we have plenty of aftermarket parts as well from top brands to enhance performance and improve playability. In addition, we have an assortment of airsoft tools for sale that makes it easier to work on your gun. Choose a subcategory or browse our complete inventory below to get started.

We’ve made it simple to find exactly what you need for your airsoft gun at a price you can afford. Our OEM section allows you to select a specific manufacturer so you only see the parts that actually fit your gun. So whether you need airsoft gun parts from Elite Force, KWA, ICS, PolarStar or another manufacturer, just click the link to go to that section. Our upgrades are split into internal and external categories, and from there you can narrow down to rail sections, reinforced body pins, AEG gearboxes and numerous other options. Go to our tools and tech products subcategory to find wrenches, pin extractors, lubricants and other airsmith necessities for your next project.

Of course, we know not everyone has the time, skills or workspace to do their own airsoft upgrades. That’s why we offer a number of affordable packages that tailor your equipment to various weapon preferences and combat environments, from field durability to Mil-sim support gunner upgrades. If you’re looking to learn about the workings of airsoft guns, our boneyard is a great place to start. The semi-working and non-working guns in this section can be salvaged for parts or used as a tech training tool. Whatever you order, you’ll get free shipping on all orders more than $60, plus a price match guarantee, full tech support and all the other benefits of shopping with the premier airsoft parts retail seller.


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PTS Centurion Arms 12.5" CMR Handguard Rail System Version 2 (Black)

PTS Centurion Arms 12.5" CMR Handguard Rail System Version 2 (Black)

  • Lightening Cut Design
  • Aluminum Construction
  • Lightweight / Low Profile
  • Simple Clamp Design
  • Steel Thread Inserts

$104.95$94.46
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Madbull PRI Gen III 9" Delta Handguard Rail System (Flat Dark Earth)

Madbull PRI Gen III 9" Delta Handguard Rail System (Flat Dark Earth)

  • Polymer Construction
  • Unique Design
  • Complete Kit

$127.60

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Madbull PRI Gen III 9" Delta Handguard Rail System (Black)

Madbull PRI Gen III 9" Delta Handguard Rail System (Black)

  • Polymer Construction
  • Unique Design
  • Complete Kit

$125.00

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Madbull PRI Gen III 9" Delta Handguard Rail System (Flat Dark Earth)

Madbull PRI Gen III 9" Delta Handguard Rail System (Flat Dark Earth)

  • Polymer Construction
  • Unique Design
  • Complete Kit

$125.00

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Madbull Daniel Defense 7" Lite RAS Handguard Rail System (Black) *No Retail Package*

Madbull Daniel Defense 7" Lite RAS Handguard Rail System (Black) *No Retail Package*

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$115.00

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Tac 9 Industries 12.5" XRU-3.1 M4/M16 AEG Rail System (Black)

Tac 9 Industries 12.5" XRU-3.1 M4/M16 AEG Rail System (Black)

  • Includes mounting hardware
  • Lightweight, modular design
  • QD swivel attachment points

$135.99$122.39
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VISM AK Keymod Extended Length Handguard (Black)

VISM AK Keymod Extended Length Handguard (Black)

  • Extended length gives extra room to mount keymod accessories
  • 8 keymod compatible surfaces
  • Pre-drilled to accept VISM/NCSTAR micro dot reflex optics
  • Slim profile
  • Anodized aluminum construction

$111.99

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Super Shooter CNC Ver. 3 8mm Gear Box (Red)

Super Shooter CNC Ver. 3 8mm Gear Box (Red)

  • CNC Aluminum Construction
  • Designed for the Version 3 Gearbox
  • Includes 8mm Bearing
  • 45 Day Warranty

$120.00

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SOCOM Gear Barrett M82 Short Barrel Kit
qualifies for free shipping

SOCOM Gear Barrett M82 Short Barrel Kit

  • Metal Construction
  • OEM Replacement
  • 45 Day Warranty

$250.00

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Modify M4 S120 Torque Complete Gearbox - Front Wired/T-Connector
qualifies for free shipping

Modify M4 S120 Torque Complete Gearbox - Front Wired/T-Connector

  • Modular Gear Set (21:6:1)
  • Selector Plate
  • M120 Tuned Spring
  • T Connector
  • 45-Day Warranty

$248.00

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Modify Speed M100 Complete Version 2 Gearbox for M4 - Front Wired/Ultra Plug
qualifies for free shipping

Modify Speed M100 Complete Version 2 Gearbox for M4 - Front Wired/Ultra Plug

  • Upgraded Internal Components
  • Complete Gearbox Assembly
  • Steel 8mm Bushings
  • Modify 8mm Torus Mechbox
  • Low Resistance M4A1 Wiring Harness

$248.00

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Modify M16 Speed Complete Mechbox-Rear Wired with T-Connector (Speed Type/S100+)
qualifies for free shipping

Modify M16 Speed Complete Mechbox-Rear Wired with T-Connector (Speed Type/S100+)

  • Drop In Assembly
  • Upgraded Internal Components
  • Complete Gearbox Assembly
  • 45 Day Warranty

$248.00

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Modify M16 Torque Complete Mechbox-Rear Wired with T-Connector (Torque Type/S120+)
qualifies for free shipping

Modify M16 Torque Complete Mechbox-Rear Wired with T-Connector (Torque Type/S120+)

  • Drop In Assembly
  • Upgraded Internal Components
  • Complete Gearbox Assembly
  • 45 Day Warranty

$248.00

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XCORTECH X3300W Chronograph/Tracer/Burst Control Unit (Tan)

XCORTECH X3300W Chronograph/Tracer/Burst Control Unit (Tan)

  • Measures ROF (RPM)
  • Digital Display with Brightness Controls
  • Low Ammo Warning
  • 45-Day Warranty

$125.00$112.50
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Echo 1 M14 Complete Gearbox w/ Torque Motor

Echo 1 M14 Complete Gearbox w/ Torque Motor

  • Comes with a High Torque Motor
  • OEM Replacement
  • Durable Material
  • 30-Day Warranty

$130.00

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Echo 1 ER25 Complete Gearbox

Echo 1 ER25 Complete Gearbox

  • OEM Replacement
  • Durable Material
  • Includes Mosfet
  • 30-Day Warranty

$120.00

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Echo 1 ER25 Metal Receiver

Echo 1 ER25 Metal Receiver

  • OEM Replacement
  • Durable Material
  • 30-Day Warranty

$129.99

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$170.00

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$170.00

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Siegetek Torque Elongated Gearbox 26.67 Ratio Gear Set

Siegetek Torque Elongated Gearbox 26.67 Ratio Gear Set

  • Ratio: 26.67
  • Chromium Molybdenum Steel Construction
  • CNC Machined
  • Heat Treated
  • Includes: Bevel, Spur, Sector

$140.00

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Madbull PRI Gen III 7" Delta Handguard Rail System (OD Green)

Madbull PRI Gen III 7" Delta Handguard Rail System (OD Green)

  • Polymer Construction
  • Unique Design
  • Complete Kit

$120.00

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Madbull PRI Gen III 9" Delta Handguard Rail System (OD Green)

Madbull PRI Gen III 9" Delta Handguard Rail System (OD Green)

  • Polymer Construction
  • Unique Design
  • Complete Kit

$125.00

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Madbull PRI Gen III 9" Delta Handguard Rail (Black)

Madbull PRI Gen III 9" Delta Handguard Rail (Black)

  • Polymer Construction
  • Unique Design
  • Complete Kit

$127.60

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Ergo Z RIS Unit For M4/M16 (Licensed By Falcon Industries)

Ergo Z RIS Unit For M4/M16 (Licensed By Falcon Industries)

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$115.00

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Modify S100 Tune Up Kit for MK5/MP5

Modify S100 Tune Up Kit for MK5/MP5

  • Design: MK5 / MP5
  • Increased Performance
  • Better Air Seal
  • Includes: Spring, Spring Guide, Piston, Piston Head, Cylinder, Cylinder Head, Tappet Plate, Air Nozzle

$111.30

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Madbull SWS 9.28" Extended Handguard Rail System (Black)

Madbull SWS 9.28" Extended Handguard Rail System (Black)

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$106.70

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Siegetek Ver. 2/3 Torque Plus 40.91 Ratio Gear Set

Siegetek Ver. 2/3 Torque Plus 40.91 Ratio Gear Set

  • Ratio: 40.91
  • Chromium Molybdenum Steel Construction
  • CNC Machined
  • Heat Treated
  • Includes: Bevel, Spur, Sector

$140.00

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Siegetek Ver. 2/3 Torque 27.5 Ratio Gear Set

Siegetek Ver. 2/3 Torque 27.5 Ratio Gear Set

  • 27.5
  • Chromium Molybdenum Steel Construction
  • CNC Machined
  • Heat Treated
  • Includes: Bevel, Spur, Sector

$140.00

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Siegetek Ver. 2/3 Revolution 14.09 Ratio Gear Set

Siegetek Ver. 2/3 Revolution 14.09 Ratio Gear Set

  • Ratio: 14:09
  • Chromium Molybdenum Steel Construction
  • CNC Machined
  • Heat Treated
  • Includes: Bevel, Spur, Sector

$140.00

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Modify S130 Torque Series Tune Up Kit for SIG552

Modify S130 Torque Series Tune Up Kit for SIG552

  • Design: SIG 552
  • Increased Performance
  • Better Air Seal
  • Includes: Spring, Spring Guide, Piston, Piston Head, Cylinder, Cylinder Head, Tappet Plate, Air Nozzle

$121.90

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Classic Army SR25 RIS Unit w/ Outer Barrel Set (Black)

Classic Army SR25 RIS Unit w/ Outer Barrel Set (Black)

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$140.00

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G&G Power Bolt for Tanaka M700/M24

G&G Power Bolt for Tanaka M700/M24

  • Steel Construction
  • Designed For Tanaka M700 / M24

$104.00

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Bravo Complete 8mm M4 AEG Front Wired Gearbox (Silver)
qualifies for free shipping

Bravo Complete 8mm M4 AEG Front Wired Gearbox (Silver)

  • OEM Replacement / Upgrade
  • Reinforced Construction
  • 8mm Bearings / Bushings Compatible
  • Drop In Assembly
  • Includes: One (1) Complete Gearbox

$202.50

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G&G Picatinny Handguard for Tokyo Marui 47 Series for Airsoft

G&G Picatinny Handguard for Tokyo Marui 47 Series for Airsoft

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$150.00

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PTS Magpul CTR Battery Stock (Dark Earth)

PTS Magpul CTR Battery Stock (Dark Earth)

  • Adjustable Cheek Riser
  • Conceals Battery Location
  • Includes Battery

$135.00

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G&G Lower Receiver for RK103/104

G&G Lower Receiver for RK103/104

  • Metal Body
  • Professional Installation Recommended
  • Durable Upgrade

$149.00

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Modify S130 Tune Up Kit for Mk5

Modify S130 Tune Up Kit for Mk5

  • Design: MK5 / MP5
  • Increased Performance
  • Better Air Seal
  • Includes: Spring, Spring Guide, Piston, Piston Head, Cylinder, Cylinder Head, Tappet Plate, Air Nozzle

$121.90

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Modify S120 Tune Up Kit for 552

Modify S120 Tune Up Kit for 552

  • Design: SIG 552
  • Increased Performance
  • Better Air Seal
  • Includes: Spring, Spring Guide, Piston, Piston Head, Cylinder, Cylinder Head, Tappet Plate, Air Nozzle

$116.60

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Modify S100 Tune Up Kit for AUG

Modify S100 Tune Up Kit for AUG

  • Design: AUG
  • Increased Performance
  • Better Air Seal
  • Includes: Spring, Spring Guide, Piston, Piston Head, Cylinder, Cylinder Head, Tappet Plate, Air Nozzle

$111.30

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G&G Complete CQB-S Front End for GR16
qualifies for free shipping

G&G Complete CQB-S Front End for GR16

  • Metal Construction
  • Allows Tactical Accessories
  • Complete Kit

$207.00

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Prometheus EG Hard Triple Torque Up Helical Gear Set

Prometheus EG Hard Triple Torque Up Helical Gear Set

  • Ratio: 26.43:1
  • Steel Construction
  • Heat Treatment
  • Includes: Bevel, Spur, Sector

$120.00

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G&G SOC16 Front Set for G&G M14 Only

G&G SOC16 Front Set for G&G M14 Only

  • Durable Construction
  • Allows Optic
  • Complete Kit

$173.00

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G&G Picatinny Handguard for  Tokyo Marui G3 for Airsoft
qualifies for free shipping

G&G Picatinny Handguard for Tokyo Marui G3 for Airsoft

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$213.00

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Airsoft Elite Full Tune Up Kit for VFC MK-43 LMG

Airsoft Elite Full Tune Up Kit for VFC MK-43 LMG

  • Adjustable Rate of Fire
  • Velocity Adjustment
  • Increased Air Seal / Air Flow
  • Includes: 12v 3300mAh Battery

$130.00

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Classic Army MK16 Large Battery Stock w/ Battery (Tan)

Classic Army MK16 Large Battery Stock w/ Battery (Tan)

  • Designed For MK16
  • More Battery Space
  • Durable Construction

$120.00

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Classic Army CA33 Series RIS Unit (Black)

Classic Army CA33 Series RIS Unit (Black)

  • Metal Construction
  • Allows Tactical Accessories
    Complete Kit

$145.00

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Classic Army AK Body (Black)

Classic Army AK Body (Black)

  • Metal Body
  • Professional Installation Recommended
  • Durable Upgrade

$119.99

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$148.35$133.52
Save: $14.84

OUT OF STOCK

Midwest Industries Inc. AK M-LOK Real Firearm Handguard (Black)

Midwest Industries Inc. AK M-LOK Real Firearm Handguard (Black)

  • Made in the U.S.A.
  • 6061 Aluminum Construction
  • Hard Anodized
  • Designed for Real Firearms

$119.95

OUT OF STOCK

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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.