Custom Length Barrel Extensions

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M4 28mm Outer Barrel (14mm-)

Build the ultimate M4. Fit any outer barrel with 14mm Negative Threads. Compatible...

$26

M4 13mm Outer Barrel (14mm-)

Build the ultimate M4. Fit any outer barrel with 14mm Negative Threads. Compatible...

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M4 5mm Outer Barrel (14mm-)

Build the ultimate M4. Fit any outer barrel with 14mm Negative Threads. Compatible...

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100mm 14mm- Insanity Airsoft Barrel Extension

Align your muzzle devices perfectly to the airsoft inner barrel with our custom...

$57

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