Heat Treated, Stress Relieved, and Cryogenic Processed Post Winding
Impregnation / Plating with Re-Micronized Molybdenum Disulfide Formulation
ADVANTAGES:
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
Enhanced 4-Coil springs maintain an extended duty cycle oad of a NEW Mil-Spec spring and is recommended for use in 18″+BBL lengths for those who retieve their brass for reloading
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.
Dual spring XP .308 extractor spring sets may be used with or withour CRANE O-rings. May be required for use in DPMS G2 Bolts for full-auto use.
Plug & play – May easily be the only extractor springs needed for the life of your bolt!!
