Sprinco Usa M16/M4 Extractor Spring Upgrade Kits - Upgrade Kit- Xp 5-Coil Extractor Spring, Insert,

Sprinco Usa M16/M4 Extractor Spring Upgrade Kits - Upgrade Kit- Xp 5-Coil Extractor Spring, Insert,

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Description
Sprinco's Extractor Springs are made of chrome silicon wirestock that has been heat treated, stress relieved, and cryogenic processing post winding. The springs are also plated with re-micronized molybdenum disulfide formulation. ADVANTAGES: XP 5-Coil...
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