Description
LBE PH 17-7 Stainless Steel Buffer Spring Sizes AR-15 AR15 Carbine Length
Description
Made in USA. 17-7 PH stainless steel is a precipitation hardened stainless steelthat provides high strength and hardness, excellent fatigue properties,good corrosion resistance, good formability, and minimum distortion uponheat treatment.
The alloy provides valuable property combinationsparticularly well suited for aerospace applications. This special alloyalso provides benefits for other applications requiring high strengthand good corrosion resistance.
M4 spring in MIL-STD 17-7 is a corrected % of Minimum tensile strength (MTS) of 26.1. Bringing it to CS, and it changes to 27.2, which is slightly worse. Carbine works in commercial or milspec carbine receiver extension tubes.Conventional wisdom says that a USGI spring is only good for about 5k cycles.
In conclusion, PH stainless steel is more corrosion resistant and possesses slightly better strength than most chrome silicon spring.
