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.

UPC: 084871331142

SureFire SF-OBC-556-SPRING Specs

General

Compatibility

SureFire SF-OBC-556 Optimized Bolt Carrier Group

Packaging Info

Package Weight	0.11 lb
Box Dimensions (LxWxH)	3.3 x 1.35 x 1.2"

SureFire SF-OBC-556-SPRING Reviews

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SureFire OBC Replacement Main Drive Spring

SureFire SF-OBC-556-SPRING Overview

SureFire SF-OBC-556-SPRING Specs

SureFire SF-OBC-556-SPRING Reviews

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