June, 14

AR-15 Detent Spring: The Key Component in Your Rifle’s Functionality

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If you're in the market for AR-15 parts, chances are you've heard of the ar-15 detent spring. This tiny yet crucial part is responsible for ensuring that various components of your firearm remain securely in place. Without it, your AR-15 can malfunction or even become dangerous.

The ar-15 detent spring may be small, but it plays a significant role in the functioning of your firearm. It's responsible for holding pins and other vital components in place while still allowing them to move smoothly when needed. This means that without a properly functioning detent spring, your weapon could experience misfires or malfunctions that could put you and those around you at risk.

So if you're looking to maintain top performance from your AR-15, it's essential to understand how this tiny component works and why its proper functioning should never be overlooked. In this article, we will take an in-depth look at what an ar-15 detent spring is all about so read on!

AR-15 Detent Spring: Everything You Need to Know

If you own an AR-15 rifle, you know how important it is to ensure that every component of your firearm is functioning properly. One of the critical components that often goes unnoticed but has a significant impact on the proper functioning of your gun is the detent spring.

In this article, we will discuss everything there is to know about an AR-15 detent spring – from its features and benefits to maintenance tips and replacements.

What is an AR-15 Detent Spring?

An AR-15 detent spring refers to a tiny yet essential part of your firearm that helps keep certain components in place. The detents are small metal balls or cylinders used for locking two pieces together, while the springs provide tension between them.

The purpose of a detente spring in your weapon system serves several purposes:

  • To hold pins securely
  • To activate safety mechanisms
  • To lock certain parts into place

Without these small yet crucial parts working correctly, issues such as misfires or failure-to-eject can occur during firing.

Features and Benefits of an AR-15 Detent Spring

Detents come in different shapes and sizes depending on their application; however, most are made with steel material for added durability. They work by exerting pressure against other surfaces when installed correctly.

Here are some benefits offered by well-maintained or upgraded versions:

Enhanced Functionality

A high-quality replacement option can significantly increase reliability with consistent cycling during shooting sessions. It allows firing without any delay while ensuring all safety measures remain functional as intended.


Since they’re typically exposed only when assembling/disassembling parts – durability becomes paramount for prolonged use over time.

Easy Replacement

It’s easy enough even for novice gun owners who don't have specialized tools at home since no major assembly/disassembly required.


Compared to other components, they are relatively inexpensive.

Maintaining Your AR-15 Detent Spring

Regular maintenance of your firearm's detent spring can save you from unnecessary troubles down the line. Keeping it clean and well-lubricated is crucial for its longevity and reliability during operation.


Cleaning your gun regularly with a cleaning solution is essential to remove accumulated dirt or debris that could affect the proper functioning of your detents. As this tiny spring is often hidden under larger parts like pins – thorough cleaning proves challenging in some instances.


Properly lubricating all moving parts reduces friction while increasing effectiveness when cycling through firing sessions.

Replacing an AR-15 Detent Spring

If there comes a time where you need to replace them, thanks to their reasonable price point; setting this up at home isn't too complicated with basic tools found in any small toolkit box.

Here are some steps on how you can safely replace it:

  1. Disassemble: Remove pins or other components that hold the current detente in place.
  2. Extract old part: Using needle-nose pliers, gently loosen/take out old ones by pushing/pulling until they pop out entirely
  3. Replace new one: Fit replacement into corresponding slot securely (may take several attempts). Ensure proper positioning before reinserting attached pin/cover plate securely.


The importance of an AR-15 Detent Spring cannot be overstated – even though it’s such a small component relative to others present within the rifle’s mechanism assembly but plays such a key role overall functioning performance reliability – That said implementing regular inspection into routine maintenance procedures will help increase lifespan/durability over time without fail! Ultimately upgrading/replacing them when necessary should not incur any significant costs while providing adequate peace-of-mind knowing all aspects remain operating as intended throughout continued use for years on end!


What is an AR-15 detent spring?

An AR-15 detent spring is a small but crucial component of the rifle. It is responsible for keeping various parts in place as well as controlling the movement of pins and other parts. The detent spring sits inside a small hole on the receiver, and its tension keeps pressure on each part that it controls.

The purpose of this tiny but important part cannot be overstated. A loose or worn-out AR-15 detent spring can result in a malfunctioning firearm, which could cause serious damage or even injury to the user.

It's important to note that there are different types of AR-15s, so not all models use identical springs. That said, they all serve essentially the same function: keeping everything where it needs to be within your rifle.

Why might I need to replace my AR-15 detent spring?

As with any mechanical component, over time an AR-15's detentspring may begin to degrade due to wear and tear from normal use.Certain factors such as frequent firing or improper installation could also contribute towards quicker wear-and-tear.Broken springs should always be replaced immediately since when they fail,the entire system will experience malfunctions which makes using your firearm unsafe.However,it's often difficultto visually inspect damaged springs without removing them during cleaning sessions.It’s best practice then,to replace older or visibly damageddetentsprings beforethey become completely unusable.The good news isthat replacementARsprings are readily available,and replacing themis easy enough for most gun enthusiasts with basic toolsand knowledge about disassembling their weapons.

A few additional reasons for replacement include lost springs (since these little pieces can easily go missing during gun cleaning), switching out components (as sometimes different ones require different types/sizes),or upgrading certain aspectsof your weapon system.Luckily,replacing any busted partswith high-quality replacementswill ensurethat your AR-15 will continue to function perfectly for many years.

Where can I get a replacement AR-15 detent spring?

There are numerous retailers and online stores that sell parts and components for firearms, including the specific type of detent spring your AR-15 requires. It’s worth noting that quality is key when it comes to purchasing replacement parts; you don’t want to skimp on something as important as a detent spring.

Before settling on any one retailer, be sure to compare prices from multiple sources, as well as read reviews from previous customers. Some popular online retailers include Brownells.comandMidwayUSA,but there are many others out there; make sure you do your research before making any purchases.

It’s also worth visiting local gun shops in personto speak with an expert about what kind of part best suits your needs.Many owners choose this route versus shopping solely online so they can receive personal advice and recommendationsfrom knowledgeable staff in their area.

Can I replace my AR-15 detent spring myself?

Fortunately,replacing thedetentspringyourselfis relatively easyand does not require specialized tools or skills.The most important thing is ensuringthat you have the right size replacement partbefore starting work.In general,the process involves disassemblingthe rifle into its component pieces,simply removingthe damagedspring,and then replacing it with anew one.Finally,you'll wantto reassemble everything back together securely.It's criticalyou take proper precautions during disassembly,to avoidlosing springsor other small pieces which could jam up your firearmduringshoots.No matter how confidentyou feel working on guns,it's always wise todo some researchon instructional videos from expertsin order tomakesureyour work alignswith industry-approved standards.SAFETYshould always be prioritywhen workingwith firearms,and you should never proceedif uncertainof what steps need taking.Next time around,take pridein knowingthat once properly installed,a newARspringshould keep your weapon running smoothlyfor years to come.

How do I know if my AR-15 detent spring needs replacing?

The easiest way to tell if an AR-15 detent spring needs replacing is through careful inspection; a broken or damaged spring will be visible with the naked eye. Other signs of wear and tear can include misfiring, difficulty chambering rounds, or simply the feeling that something’s not quite right within your firearm.

It's also a good idea to replace springs in general around every 5000rounds fired which is considered standard practiceamong firearm owners.Amateur gunsmiths may want to take apart their weapons more frequently,and as such should inspect their rifles and components at least monthly.But beyond that,it's always betterto err onthe sideof cautionwhen dealing with firearmsand consult trusted professional adviceor someone experiencedin these types of repairs before moving forwardwith any DIY fixes.

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