10 Pack - Sprinco 5 Coil Extractor Spring - Includes 10 Springs & Spring Inserts
Chrome Silicon Wirestock
Heat Treated, Stress Relieved, and Cryogenic Processed Post Winding
Impregnation / Plating with Re-Micronized Molybdenum Disulfide Formulation
XP 5-Coil spring has a heavier spring load than OEM springs, thus negating the need for a D-Fender™ ring or adding CRANE Viton O-Rings
Use 5-Coil spring with either black extractor spring insert OR CRANE Viton O-Rings, but not both
While the XP 5-Coil spring is totally reliable for all 5.56 BBL lengths, it can be aggressive on case rims in 18"+length BBL rifles, and may be too strong for some bolts with extremely tight bolt face tolerances
Extreme duty cycles provided while maintaining performance specifications
Unaffected by heat up to 750°F
D-Fender™ rings are NOT recommended for use with our 5-Coil extractor springs.
Plug & play - May easily be the only extractor springs needed for the life of your bolt!!