Description
Reduced weight safety selector spring for the Springfield Kuna. This spring will reduce the safety selector operation weight by approximately 15% with respect to the factory Kuna spring. We tested many different spring rates/designs in the Kuna selector assembly and found this to be the sweet spot for firm tactile operation without being overly stiff or difficult to use. This spring is a drop in replacement for the factory spring and can be used with the original selectors, or paired up with any combination of our machined selectors for the Kuna. Our springs are manufactured from stainless spring steel for smooth operation and a lifetime of corrosion resistance and maintenance free service.
- 15% Reduced Weight Selector Spring for Springfield Kuna
- Drop in Replacement
- Use with OEM Selectors or HBI Selectors
- Made from Stainless Spring Steel
Designed and Manufactured completely in USA.
Gunsmith Installation Recommended for All Parts.






Monty Allen (verified owner) –
Great instructions. Spring is just right. Thanks!
jfairman1 (verified owner) –
Easy to install.Such an improvement for 5 bucks. I have arthritis in my thumbs and the stock safety spring was so painful to operate. I have been using HBI products for years and was never let down.
LuisRJR (verified owner) –
Combine this with the safety offered by HBI, and you will not be disappointed. MUCH easier to get in and out of safety. Easy thumb flicks are all it takes. Installation is easy; (@thegunchannel) has a great video outlining the installation for the regular person.