Apex Extra Power Magazine Spring Set

Description

Springs are the unsung workhorses of a reliable magazine. When they start to fatigue, you get feeding failures, short strokes, and a slide that refuses to lock back on an empty mag. The Apex Extra Power Magazine Spring Set is a direct fix for those problems, built for shooters who need their gear to work every time — whether that’s on the range, in the field, or during daily carry.

Each spring is wound from Rocket Wire, a high-grade material chosen for its extreme durability and consistent tension over thousands of cycles. This isn’t a temporary upgrade; it’s a long-term reliability investment. The extra power improves cartridge lift during the feeding cycle, which means the round is positioned higher and more consistently for pickup. You’ll also get a more positive slide lock back when the magazine runs dry — no more wondering if your gun is empty or just failing to catch.

Currently confirmed to function as intended in these specific setups:

• FNX-45 magazines — but only with an Apex Magazine Extension installed. The added spring tension compensates for the extension’s increased capacity and keeps the follower moving reliably.
• Apex 19-round magazines for the SA-35 Series Pistols. These springs are purpose-built for that 19-round body and work correctly with the factory follower and basepad.

Important fitment note: Do not use these springs in the Apex 17-round magazine for the SA-35. They are designed specifically for the 19-round version and will cause function issues in the shorter body.

Each spring is manufactured in the USA to Apex’s exact specifications by a trusted domestic spring manufacturer. That means tight tolerances, consistent heat treatment, and no cutting corners. At $25 for the set, this is a cost-effective way to restore or improve magazine performance without replacing the entire magazine body.

If you’re running a high-capacity SA-35 or an FNX-45 with an extension, and you want reliable feeding and consistent slide lock — especially with defensive or hunting ammunition — this spring set is a practical upgrade. It’s also a smart replacement for worn factory springs in guns that see heavy use. Install it, test it, and trust it.