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You are here: Home > Magazines & Upgrade Parts > Internal Upgrades/Parts
Airsoft Megastore carries many internal parts and upgrades for your airsoft gun.  Be it a power upgrade in the likes of a new spring, or a replacement piston or tappet plate, you can rest assured that at Airsoft Megastore, you'll be getting it at the lowest price on the market. 
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Element Airsoft Upgrade: M105 Grade Spring for AEG Element Airsoft Upgrade: M115 Grade Spring for AEG
List Price: $25.00
Our Price: $12.95
Sale Price: $8.95
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List Price: $25.00
Our Price: $12.95
Sale Price: $9.95
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Element Airsoft Upgrade: M105 Grade Spring for AEG Element Airsoft Upgrade: M115 Grade Spring for AEG
DBoys Metal Universal M4 & M16 Magazine Catch SYSTEMA High Performance Airsoft M120 Irregular Pitch Taper Spring for AEG [350 - 400 FPS]
List Price: $20.00
Our Price: $7.95
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List Price: $19.00
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DBoys Metal Universal M4 & M16 Magazine Catch Systema M120 Irregular Pitch Taper Spring for AEG
SYSTEMA High Performance Airsoft M130 Irregular Pitch Taper Spring for AEG [395 - 450 FPS] SYSTEMA High Performance Hop-Up Packing / Bucking for Airsoft AEGs
List Price: $21.00
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List Price: $9.00
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Systema M130 Irregular Pitch Taper Spring for AEG Systema Hop-Up Packing / Bucking for AEG ZS0701
SYSTEMA Duracon Ball-Bearing Piston Head for Airsoft AEGs SYSTEMA Silent Head Set for Version 2 (V2) Gearbox - Airsoft AEG Upgrade
List Price: $25.00
Our Price: $17.95
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List Price: $50.00
Our Price: $38.95
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SYSTEMA Duracon Ball-Bearing Piston Head for AEG ZS0432 SYSTEMA Silent Head Set for V2 Gearbox ZS0320
SYSTEMA Silent Head Set for Version 3 (V3) Gearbox - Airsoft AEG Upgrade SYSTEMA High-Strength Polycarbonate Piston (Full Tooth) for Airsoft AEGs - FOR STANDARD GEAR SET
List Price: $50.00
Our Price: $38.95
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List Price: $35.00
Our Price: $24.95
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SYSTEMA Silent Head Set for V3 Gearbox ZS0321 SYSTEMA Polycarbonate Piston (Full Tooth) ZS0501
SYSTEMA High-Strength Polycarbonate Piston (Half Tooth) for Airsoft AEGs - FOR HELICAL GEAR SET SYSTEMA Area 1000 Polycarbonate Piston for Airsoft AEGs - V2/V3 Gearbox Compatible A01
List Price: $35.00
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List Price: $18.00
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SYSTEMA Polycarbonate Piston (Half Tooth) ZA0502 SYSTEMA Area 1000 Polycarbonate Piston SY-A01
SYSTEMA Area 1000 Tappet Plate - Version 2 Gearbox Compatible A13 SYSTEMA Area 1000 Tappet Plate - Version 3 Gearbox Compatible A14
List Price: $20.00
Our Price: $13.95
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List Price: $20.00
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SYSTEMA Area 1000 Tappet Plate - Ver. 2 Compatible SYSTEMA Area 1000 Tappet Plate - Ver. 3 Compatible
SYSTEMA Area 1000 High Performance Cylinder Head - Version 3 Gearbox Compatible A06 SYSTEMA Area 1000 High Performance Cylinder Head - Version 2 Gearbox Compatible A05
List Price: $20.00
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List Price: $20.00
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SYSTEMA Area 1000 Cylinder Head - Ver 3 Compatible SYSTEMA Area 1000 Cylinder Head - Ver 2 Compatible
SYSTEMA Precision Shim Set for All AEG Gearboxes ZS0702 Prometheus Hard Piston - Full Tooth B500 - FREE SHIPPING
List Price: $7.00
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List Price: $40.00
Our Price: $29.95
Sale Price: $23.95
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SYSTEMA Precision Shim Set for All AEG Gearboxes ZS0702 Prometheus Hard Piston - Full Tooth B500
Prometheus Hard Piston - Half Tooth B501 (Helical Gear Set) - FREE SHIPPING
List Price: $40.00
Our Price: $29.95
Sale Price: $23.95
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Prometheus Hard Piston - Half Tooth B501 (Helical Gear Set)
   
 
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All airsoft guns sold by Airsoft Megastore include the federally mandated blaze orange tip measuring at least 6mm.
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