Firearms
Put precision and accuracy into your firearm with custom gun spring solutions, made in the USA by Vulcan Spring. We will partner with your engineers, contract manufacturers and designers to prototype and mass-produce custom springs, such as recoil springs, magazine springs, trigger springs, and gun spring kits for powerful and performance-focused firearms. Recognized by ISO and backed by statistical data and other studies that confirm our precision and consistency, we stand ready to custom design and build your gun spring with your firearm’s function in mind.
Most Popular Gun Springs Used for Firearms
Constant Force Springs
Constant Force Springs provide continuous force from your firearm’s first round to the last. Offering higher force in a compact space, constant force springs make for smoother reloads than traditional compression magazine springs, allowing for easier use of higher capacity magazines.
Power Springs
Power Springs are used in drum and rotary style magazines for high capacity, reducing the need for reload. They provide high-cycle life and quality material for superior and constant performance.
Torsion Springs
Torsion springs offer precision and accuracy to trigger and hammer mechanisms. They are also used in dust covers and flip-up sights.
Compression Springs
We offer compression springs which can be used in a variety of applications such as detent mechanisms, buffer tube assemblies, AR style lower and upper receiver springs, sights, trigger spring assemblies, ejector springs and mounts.
Wire Forms
Wire Form Springs are available with a wire size capability of .008”-.177”, which aid in retention locking applications.
Pullbox® Security Tethers
The versatile and dependable PULLBOX® line of retractable tethers sets the standard for proven performance and customizable options. The retractable tethers are used most often for Point-of-Purchase (POP) security, product positioning, and signage support.



Common gun spring applications
- Box-style magazine
- Handgun drop-in trigger assemblies & replacement springs
- Rifle drop-in trigger assemblies & replacement springs
- Drum-style rifle magazine
- Buffer tube assembly