Browning Hi-Power Mainspring Tool

Description

The Apex Hi-Power Mainspring Tool is a professional gunsmith-grade tool that takes the fight out of swapping the mainspring on a Browning Hi-Power or Springfield SA-35. Instead of wrestling with spring tension and cussing at a stubborn support nut, you get a clean, controlled compression that lets you slide out the pin and nut in seconds. Made in Peoria, AZ, this browning hi-power mainspring tool is built for the man who values his time and his knuckles.

Manufacturer	Apex
Model	Hi-Power Mainspring Tool
Material	Machined steel, black oxide finish
Compatibility	Browning Hi-Power, Springfield SA-35, FEG clones
Finish	Black oxide
Weight	2.8 oz
Condition	New

Key Features

• Compression sleeve design – Holds the mainspring captive so you can remove the support nut and pin without fighting spring tension. Why it matters: no more pinched fingers or flying parts.
• Precision-machined steel – Made from billet steel with a black oxide finish that resists rust and wear. Why it matters: this tool will outlast a dozen spring swaps and still look like new.
• Fits factory and aftermarket struts – Works with original Browning struts, Springfield SA-35 struts, and most clone struts. Why it matters: no need to buy a second tool if you swap parts or build a custom gun.
• Compact, shop-ready size – At 2.8 oz and about the length of a pencil, it fits in a tool roll or bench drawer. Why it matters: you can keep it handy without cluttering your workspace.
• Made in the USA – Built in Peoria, Arizona by Apex, a shop known for quality firearm accessories. Why it matters: American manufacturing means consistent tolerances and real customer support.

Who It’s For

This tool is for the gunsmith who wants to work faster and the hobbyist who wants to work smarter. If you own a Browning Hi-Power or Springfield SA-35 and have ever fought with that mainspring nut, you’re the customer. It also suits collectors who maintain multiple Hi-Powers and need a consistent, repeatable method for spring swaps.

Pros & Cons

• Pros: Eliminates guesswork, saves time, durable steel construction, fits multiple platforms, compact storage.
• Cons: Works best with the strut removed from the frame – not a field-strip tool. You’ll still need a bench or vise for the job.

Comparison

Feature	Apex Hi-Power Mainspring Tool	Zev Technologies Glock Tool	Lone Wolf Armorer’s Block
Primary Use	Hi-Power/SA-35 mainspring	Glock striker assembly	Glock frame pins
Material	Machined steel, black oxide	Steel, Nitride finish	Polymer block
Compatibility	Browning Hi-Power, SA-35	Glock 9mm/.40	Glock (all double-stack)
Price	$35	$45	$25
Made In	USA	USA	USA

While the Zev tool is excellent for Glock owners and the Lone Wolf block is a solid pin-pusher, neither addresses the Hi-Power mainspring. The Apex tool is the only one in this group that solves that specific problem – and it does it for a fair price.

FAQ

How does a Browning Hi-Power work?

The Hi-Power uses a short-recoil, locked-breech system with a cam-operated barrel. The mainspring, housed in the grip, powers the hammer and provides the force for the sear engagement. Swapping the mainspring changes trigger pull weight and can improve reliability with certain ammo.

What is the best Browning Hi-Power?

Many shooters consider the original FN-made Hi-Power from the 1970s-80s the gold standard for fit and finish. The Springfield SA-35 is a strong modern option with an improved trigger and better sights. For a clone, the FEG PJK-9HP offers solid value. Regardless of which you own, the Apex mainspring tool works on all of them.

Is the Browning Hi-Power reliable?

Yes, when properly maintained. The Hi-Power has a proven track record with military and law enforcement. A weak or worn mainspring can cause light strikes or failure to reset the trigger. Replacing the mainspring with a quality Wolff or Apex spring, and using this tool to do it, keeps the gun running.

How to carry a Browning Hi-Power?

Most shooters carry cocked-and-locked (hammer back, safety on) in a quality OWB holster. A good belt and holster that covers the trigger guard are essential. The Hi-Power’s slim profile makes it easier to conceal than a double-stack 9mm.

Is the Browning Hi-Power still made?

FN discontinued the original Hi-Power in 2018. Springfield Armory now produces the SA-35, a modern take on the design. Girsan also makes a licensed clone. All of them use the same mainspring system, so the Apex tool remains relevant for current production guns.

Why Buy From Us

• ✓ Nationwide delivery – all 50 states
• ✓ Ships in 1-2 business days
• ✓ 30-day returns, no hassle
• ✓ Secure checkout with encryption

Looking for more? Check our Springfield SA-35 Parts, Browning Hi-Power Tools, or Gunsmithing Tools.

Last updated: April 2026