ISMI Magazine Spring for Sig Sauer P365XL, P365 X-Macro 17 Round

The ISMI Magazine Spring for Sig Sauer P365XL, P365 X-Macro 17 Round upgrades the stock magazine spring with a Chrome Silicon replacement. ISMI springs are heat treated, shot-peened, and stress relieved after winding to enhance performance and durability. The benefit of Chrome Silicon is that it has a higher yield point of material than OEM springs, which are made from music wire. Chrome silicon springs have 10x the life of traditional music wire springs, and they hold much better tolerances during compression and cycling. The result is a spring that doesn't take as much initial setup as an OEM spring and exerts more load for the entire lifespan of the spring. Upgrade your firearm with ISMI springs from NDZ Performance to improve your firearm's performance and reliability.

See our complete line of Sig P365 XL Products here

See our complete line of Sig Sauer X Macro Products here

NDZ Performance is ISMI's exclusive vendor for P365 Magazine Springs!

INSTALLATION WARNING: Magazine Floor Base Plates & Extension Devices are secured by Spring Tension & can cause serious injury if improperly handled. NDZ Performance recommends the use of Safety Glasses when removing or installing this product.

Note: NDZ always recommends any part be installed by a qualified and trained gunsmith. NDZ promotes the use of safety practices and gear when working on any firearm.

Disclaimer: "Sig Sauer" is a federally registered trademark of SIG Sauer, Inc. or SIG Sauer GmbH & Co.KG. NDZ Performance has NO affiliation in any manner with, or otherwise endorsed by, SIG Sauer, Inc. or SIG Sauer GmbH & Co.KG. The use of the word "Sig Sauer " on this page is merely to identify which firearm these parts or components are compatible with.