AR-15 Selector Detent Spring is proud to introduce the new house-brand AR-15 selector detent spring. These brand new, MIL-SPEC springs are guaranteed to fit in your MIL-SPEC AR-15.

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American Owned and Operated


20+ Years In Business


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Ships from Pennsylvania


The AR-15 selector detent spring, as are all of our house brand spare and replacement parts for the AR-15 platform, is a brand new part produced in a state-of-the-art manufacturing facility that holds several foreign military contracts. As such, all parts are compatible with and interchangeable in any MIL-SPEC AR-15.

Located in the small, recessed hole at the bottom of the lower receiver underneath the pistol grip, the AR-15 selector detent spring is a small spring designed to hold the selector detent in place and under tension. Together, the aforementioned components serve to hold the selector in place for either of its two settings. With enough force, the selector can be switched so that the rifle may be placed in either a "safe" mode or a "fire" mode. This small component is held in place by the pistol grip.

Spare and replacement parts are an important consideration when it comes to firearms. Like any machine, firearms rely on a series of parts to function properly – especially those components that may have an impact on the firing sequence. In general, if a part breaks or fails, a repair or replacement becomes immediately necessary – not only to keep a firearm functioning properly but also to ensure the safety of yourself and those around you.

It is also important to consider availability when discussing spare and replacement parts. At this time, is seeking to provide our customers with a wide selection of spare and replacement parts for the AR-15 platform. Several brand new parts from the house brand are now readily available on our website at an affordable price. If you have any need or desire for spare or replacement parts, now would be a good time to take advantage of this offering.

More Information
Overall Rating
Just as described.
Review by Ellsworth Y.
Perfect replacement selector detent spring for my AR15.
Overall Rating
Great Item
Review by Stuart A.
These parts are good. Would definitely buy again.
Overall Rating
Review by Elaine A.
Functions great as a spare selector detent spring for my AR15.
Overall Rating
Good for my use
Review by Sebastian N.
Received in three days after placing my order. Will be back to buy at KS again!
Overall Rating
Great for my use
Review by Rudolfo U.
Lowest price I could find that was online. Shipping was fast through Fedex.
Overall Rating
Excellent Spare Part
Review by Leland S.
I purchased two of these selector detent springs. Used one for repair, other is spare.
Overall Rating
Review by Jaccob A.
Functions great as a replacement selector detent spring for my AR15.
Overall Rating
Great AR15 selector detent spring
Review by Edmond G.
Satisfied with this AR15 selector detent spring.
Overall Rating
Excellent Website
Review by Gerado C.
Best AR15 selector detent spring for the price from a awesome company. Thank you KS!
Overall Rating
Quick Shipping
Review by Oronde X.
I ordered two of these selector detent springs. Using one for repair, other is spare.
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