Product Description
Extractor Springs:
- Extreme duty cycles provided while maintaining performance specifications
- Unaffected by heat up to 750°F
- Enhanced 4-Coil springs maintain an extended duty cycle load of a NEW Mil-Spec spring and is recommended for use in 18"+BBL lengths for those who retieve their brass for reloading
- XP 5-Coil spring has a heavier spring load than OEM springs, thus negating the need for 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 barrel lengths, it can be aggressive on case rims in 18"+length barreled rifles, and may be too strong for some bolts with extremely tight bolt face tolerances
Ejector Springs:
- Unaffected by heat up to 750°F
- Extreme length duty cycle while maintaining performance specifications.
- Enhanced ejector springs match the loads of a NEW Mil-Spec spring.
Further Reading:
These are the extractor and ejector springs that come equipped in our Sprinco Enhanced BCG as standard. Accept no substitutes.
Product Specification
- Chrome Silicon Wirestock
- Heat Treated, Stress Relieved, and Cryogenic Processed Post Winding
- Impregnation / Plating with Re-Micronized Molybdenum Disulfide Formulation
