Apex Extra Power Magazine Spring Set

Description

The Apex Extra Power Magazine Spring Set delivers a tangible upgrade in reliability for your Springfield SA-35 or compatible high-capacity magazine platform. Priced at $25.00, these springs are a straightforward, cost-effective solution for shooters who demand consistent feeding and positive slide lock-back on the last round—two areas where factory springs can fall short, especially in demanding use.

Each spring is precision-formed from Rocket Wire, a material selected for its extreme durability and memory retention. This is the same class of wire used in applications where failure is not an option. By increasing spring tension, the Apex set improves cartridge lift during the feeding cycle, reducing the chance of a nose-dive or sluggish feed. The extra power also ensures the follower pushes the slide lock lever up with authority when the magazine is empty, giving you a clear, tactile signal that it’s time to reload.

These springs are confirmed to function as designed in the following magazine configurations:

• FNX-45 magazines – when used with an Apex Magazine Extension installed.
• Apex 19-round magazines for the SA-35 Series Pistols. (Not recommended for the Apex 17-round magazine; for best results, use with the 19-round body.)

If you run an SA-35 with Apex’s high-capacity 19-round magazine, this spring set is the missing piece for a fully optimized magazine system. For FNX-45 owners, pairing these springs with an Apex extension yields a setup that handles heavy subsonic loads and defensive ammunition with equal reliability.

Manufactured in the USA to Apex’s exact specifications by a select spring maker, each unit is built for consistency from the first round to the last. The extra tension also helps mitigate issues caused by worn or dirty magazine internals, extending the useful life of your magazines.

Whether you’re working on a competition build or simply want your SA-35 or FNX-45 to run with zero compromises, this spring set provides a measurable improvement in function without adding complexity or bulk. For California-compliant setups where magazine capacity is limited by law, maximizing the reliability of your existing magazines is a smart, practical upgrade. Fitment is drop-in for the listed magazines—no modification to your firearm is required.