SureFire OBC Replacement Main Drive Spring
This Main Drive Spring is a replacement or spare for the one that comes with the Surefire SF-OBC-556 Optimized Bolt Carrier Group for M4/M16/AR-Variant Rifles & Carbines.
*Buffer pictured is not included.
-21%
Surefire – Spring Main Drive – OBC Replacement
$15.89 Save:$5.00(21%)
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