Top takeaways
- SPRINCO USA's AR .308 Dual Extractor CS Spring Upgrade Kits feature heat-treated, stress-relieved, and cryogenically processed chrome silicon wirestock springs with molybdenum disulfide plating.
- The XP 5-Coil spring offers a heavier load than OEM springs, eliminating the need for D-Fender™ rings or CRANE Viton O-Rings, and is suitable for all 5.56 BBL lengths.
- These springs maintain performance under extreme duty cycles and temperatures up to 750°F, and the dual spring XP .308 sets can be used with or without CRANE O-rings.
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Made in USA