Externals change how the gun handles and how it looks. Handguards with M-LOK or KeyMod, stocks and buffer tubes, metal receivers, outer barrels and grips for M4, AK and other platforms.
577–600 of 1785 products
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CTM FUKU-2 Reaper Charging Handle for AAP-01 - Silver
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CTM FUKU-2 Reaper Charging Handle for AAP-01 - Blue
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CTM AAP-01 CNC Magwell - Gold
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CTM AAP-01 CNC Magwell - Red
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CTM FUKU-2 Skeleton CNC Upper Set for AAP-01 - Electroplated Gold
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CTM FUKU-2 Skeleton CNC Upper Set for AAP-01 - Violet / Green
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CTM FUKU-2 Skeleton CNC Upper Set for AAP-01 - Gold
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CTM FUKU-2 Skeleton CNC Upper Set for AAP-01 - Blue / Silver
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CTM FUKU-2 Skeleton CNC Upper Set for AAP-01 - Red / Gold
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CTM Long FUKU-2 CNC Upper Set Compensator for AAP-01 - Army Green
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CTM Long FUKU-2 CNC Upper Set Compensator for AAP-01 - Silver
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CTM Long FUKU-2 CNC Upper Set Compensator for AAP-01 - Blue
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CTM AAP-01 / G-Series Magazine Extension Plate - Gold
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CTM AAP-01 / G-Series Magazine Extension Plate - Violet
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CTM AAP-01 / G-Series Magazine Extension Plate - Army Green
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CTM AAP-01 / G-Series Magazine Extension Plate - Red
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CTM AAP-01 / G-Series Magazine Extension Plate - Silver
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CTM AAP-01 / G-Series Magazine Extension Plate - Grey
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CTM AAP-01 Aluminium Guide Rod - Green
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CTM AAP-01 Aluminium Guide Rod - Grey
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CTM AAP-01 Ghost Ring Sights V2 - Black
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CTM AAP-01 Lower and Upper RIS mount - Red
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CTM AAP-01 Lower and Upper RIS Mount - Black
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CTM FUKU-2 CNC Upper Set V2 for AAP-01, CUTOUT (Short) - Black / RedA new handguard is the most visible external upgrade: a slim M-LOK or KeyMod rail saves weight over a quad Picatinny RIS and gives you mounting slots exactly where you want a light or a grip. Stocks change length of pull and battery space; a crane stock holds a nunchuck battery, a PDW stock makes a carbine compact. Pistol grips with a different angle and a motor plate that lets you adjust motor height improve comfort and trigger response at the same time.
A metal receiver set replaces a polymer body for stiffness and a solid feel, and licensed versions carry real trademarks. Outer barrels in different lengths let you build a long rifle or a short CQB gun on the same lower, with a 14 mm CCW thread for a suppressor; the thread filter lists CW and CCW options. Flash hiders, gas blocks and barrel nuts complete the front end.
Most M4 AEG externals follow the Tokyo Marui standard and fit between brands, but receiver pins, buffer tube threads and handguard nuts vary enough to check the product notes. AK, G36, MP5 and SCAR parts are more brand-specific, and GBB rifles use their own dimensions. Use the platform and rail system filters, and remember that externals are unrestricted parts with no age limit even though the complete guns are not.
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