Sig Guy Increased Power SIG Sauer P365 XMACRO Magazine Spring

Elevate your firearm's reliability with our precision-engineered magazine springs, expertly manufactured from high-grade Chrome Silicon alloy. These nested, "plus power" springs are specifically designed to outperform standard components, delivering a consistently higher load and a significantly longer service life than factory equivalents.

The primary advantage of utilizing Chrome Silicon is its superior material yield point. This high-performance alloy allows the spring to resist "taking a set"—the common loss of length and tension over time—ensuring it maintains its integrity even under heavy use. By providing greater spring tension while operating under lower internal stress, these springs offer a smoother, more reliable feeding experience and the long-term durability demanded by serious shooters.