Speras
SPERAS M4 18650 Extension Tube
$4.99
SPERAS M4 18650 Extension Tube is a field-use light from Speras; for this specific model, focus on 18650 so beam behavior and carry fit match your actual use.
Extend your SPERAS M4 runtime with this 18650 battery extension tube converts your M4 to accept a longer-lasting 18650 cell for extended use.
Note: This is the extension tube only. Battery and flashlight not included.
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SPERAS M4 18650 Extension Tube
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