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Externals: Handguards, Stocks & Receivers

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.

145–168 of 1777 products

LCK12-K16 Tactical Buttstock
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

LCK12-K16 Tactical Buttstock
Price to follow
M4 Dust Cover Assembly
KRYTAC
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

M4 Dust Cover Assembly
Price to follow
AAC21 Shim Set
Action Army
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

AAC21 Shim Set
Price to follow
M4 Fire Selector Full Steel
G&G
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

M4 Fire Selector Full Steel
Price to follow
Bone Long Bipod
Strasser
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

Bone Long Bipod
Price to follow
GTL II LED
Glock
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

Gtl II LED
Price to follow
Compact 6.0-9.0 Inch Bipod
Firefield
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

Compact 6.0-9.0 Inch Bipod
Price to follow
Zsport-12 Handguard
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

Zsport-12 Handguard
Price to follow
AMP 1L Green Cone
Princeton Tec
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

AMP 1L Green Cone
Price to follow
M4 Magazine Release
KRYTAC
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

M4 Magazine Release
Price to follow
LCK-19 Fixed Stock
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

LCK-19 Fixed Stock
Price to follow
Pirate Arms
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

Enhanced MP5 Magazine Release
Price to follow
AK-9 Tactical Lower Handguard
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

AK-9 Tactical Lower Handguard
Price to follow
1 Rail Gas Block
MadBull
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

1 Rail Gas Block
Price to follow
Pirate Arms
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

MP5 RIS Handguard
Price to follow
ZB-31 Classic Upper Handguard
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

ZB-31 Classic Upper Handguard
Price to follow
ZB-13 AK Side Scope Mount Rail
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

ZB-13 AK Side Scope Mount Rail
Price to follow
Zsport-12U Handguard
LCT
In stock at our supplier, delivery in 5–10 working days

In stock at our supplier, delivery in 5–10 working days

Zsport-12U Handguard
Price to follow

Handguards, stocks and grips

A 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.

Receivers and outer barrels

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.

Compatibility between brands

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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