July, 22

AR-15 Detent Spring: A Guide to Installation and Functionality

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If you're a seasoned AR-15 owner, you're no stranger to the importance of every component in this trusty rifle. Every small part plays a vital role in its efficient functioning, and one such tiny yet crucial piece is the detent spring. The detent spring for AR-15 is responsible for keeping various controls and safety mechanisms in place, preventing them from accidentally sliding out of position.

While it may seem insignificant at first glance, without the detent spring's proper function, your weapon can become unsafe or even unusable. It's easy to overlook these small parts until they fail or cause problems that demand attention. Therefore it becomes imperative that every gun enthusiast knows what role this component plays and how to maintain its efficiency.

In this article about the detent spring for AR-15s, we will delve deeper into understanding what exactly it does and how important it is for your firearm's overall functionality. We will also discuss some maintenance tips so that you can keep your rifle running smoothly at all times!

Detent Spring for AR-15: What You Need to Know

If you're an AR-15 enthusiast, you know that even the smallest parts can have a significant impact on performance. One of those small yet important parts is the detent spring. In this article, we'll take a closer look at what a detent spring is, why it's essential for your AR-15, and how to choose the right one for your needs.

What Is a Detent Spring?

A detent spring is a tiny coil spring that works in conjunction with other components in your AR-15's trigger assembly. It helps keep certain parts in place while allowing them to move smoothly when needed.

In particular, the detent spring holds down pins or plungers that are used as selectors for things like fire mode or magazine release. Without this component working correctly, these critical mechanisms would fail to function reliably.

Why Is It Important?

As mentioned earlier, even minor components can have major impacts on overall performance – and this applies equally well to the role of the humble detent spring.

Firstly and most obviously: if you lose or damage this part of your gun assembly during cleaning or shooting procedures (it happens!), then there will be problems with proper functioning until it is replaced.
Secondly – but just as crucially – variations between different types/brands/models/etc., can affect everything from reliability through durability all way up into accuracy itself!

In short? Choosing carefully before taking action ensures better outcomes than simply winging it like so many enthusiasts do!


When shopping around for a new detendt springs various factors ought come into play:


Detendt springs vary considerably according both quality & price-point; naturally one should not pay more than necessary but going too cheap may lead directly towards replacing again sooner rather than later…


There are several different materials used in producing these springs, Stainless Steel being the most common but others such as titanium and melonite are also used. It’s important to note that different materials have varying strength points and durability!


The length of your detent spring is an essential consideration when selecting one for your AR-15. Too short or too long a spring can cause misfires, jams, or even breakage if not done correctly; selecting the right size is therefore crucial.


Brand matters a lot in the world of gun components: established brands like Colt & Palmetto State Armory are more expensive but worth it in terms of reliability while lesser known brands may lack quality control standards necessary to manufacture reliable parts at all times.

Tips for Choosing the Right Detent Spring

Choosing new detendt springs might seem intimidating to those new into gun maintenance – yet it doesn’t need to be! Below we list some great tips which will help you make an informed decision:

  1. Always keep an eye on reviews: they can often prove invaluable when considering purchasing anything online.
  2. Make sure you purchase only high-quality products produced by established manufacturers with good reputations!
  3. Consider buying spare springs ahead-of-time: this ensures that any problems will be resolved quickly without having majorly negative effects upon shooting sessions.
  4. If unsure about how-to install replacement part(s), consult with expert technicians first before attempting installation yourself!

In conclusion? A properly working AR-15 requires proper care & attention from its owner… including choosing wisely between various types/brands/models/etc.,when replacing small components such as detent springs – so don't neglect doing adequate research beforehand!


What is a detent spring for AR-15, and why is it important?

The detent spring is a small but crucial component of the AR-15's firing mechanism. It sits inside the lower receiver and provides resistance to various pins and levers that control the weapon's safety, trigger, magazine release, bolt catch, and other functions. Without a properly functioning detent spring in place – or with one that has worn out or broken – these parts can become loose or fail altogether.

To put it simply: if your AR-15 isn't working right, there's a good chance something has gone wrong with its detent spring.

Replacing this part may seem like an unnecessary hassle at first glance. But given how much easier it makes handling your firearm (and how much less frustrating it will make range time), investing in quality replacement springs should be considered essential for any responsible gun owner.

How do I know if my AR-15 needs new detent springs?

There are several signs you might notice that indicate issues with this component:

  • The safety selector becomes too loose or too tight
  • The magazine release button feels "spongy" or doesn't click into place properly
  • You have trouble releasing the bolt catch after reloading
  • Your trigger doesn't reset correctly after firing

If you're experiencing any combination of these symptoms (or others not listed here), take some time to inspect your rifle more closely. In many cases replacing worn-out components like the detent springs can quickly solve frustrating problems like those listed above.

One thing to keep in mind: while you might be able to get away without replacing all your rifle’s springs at once as they wear out over time (if caught early enough), doing so may save headaches down-the-line by ensuring uniformity across parts when installed together.

Is replacing my own dead/dying/degraded/broken/old/ar 10 & ar 15 detent spring something I can do myself?

Yes, replacing your own detent spring is a fairly straightforward process that can be accomplished with just a few basic tools and some patience.

Here's a general overview of the steps required:

  • Field strip your rifle and remove the lower receiver
  • Locate the detent spring(s) you need to replace (usually located near triggers/safeties)
  • Use small needle-nosed pliers to carefully remove worn-out springs from their recesses.
  • Insert new springs into their corresponding slots, making sure they're seated securely.

It's worth noting that while these steps are simple in theory, it's important to exercise caution when working on firearms. Make sure your weapon is unloaded before taking it apart or performing any maintenance procedures.

If you're ever unsure about how to proceed or concerned about damaging parts during repairs/replacements – turning things over to experienced gunsmiths may be preferred.

What should I look for when shopping for replacement AR-15 detent springs?

When selecting replacement parts – including AR-10 & AR-15 Detents Springs – there are four key factors you should consider:

  1. Quality: Look for brands with reputations for durable materials (e.g., steel), tight tolerances, and rigorous quality control standards. Poorly-made replacement components will only cause headaches down-the-line.
  2. Compatibility: Ensure that any new parts will fit snugly into place within your specific make/model of rifle; not all rifles have interchangeable trigger group components.
  3. Price: While brand name isn't everything within this market segment, higher cost options often include consistency across manufacturing lots as well as tested durability through extended use periods; Cheaper isn't always better if buying multiple replacements every year due wear-and-tear related issues..
  4. Reputation/Reviews: Read customer reviews online (various retailers offer product reviews) but focus on reputable sites rather than outlets with unknown credibility. Doing so will give you insight into other customers' experiences and help you make more informed decisions.

Remember, the wrong replacement parts can cause a whole host of issues – including dangerous malfunctions. Don't skimp on quality when it comes to your firearms.

How often should I replace my AR-15's detent spring?

This is a tough question to answer definitively, as there are many variables that can impact how long any given detent spring lasts before needing replacement. In general, however:

  • If your rifle has seen heavy use (i.e., frequent range trips or competitive shooting), it may wear out faster than one that sees less action.
  • Exposure to environmental factors like moisture and dust can also shorten the lifespan of springs.
  • Poor maintenance practices (e.g., not keeping components clean and well-oiled) may accelerate wear-and-tear.

With those caveats in mind, most gun owners recommend replacing their AR-15's detent springs every 2-3 years if they see regular use; after all doing so ensures reliability when needed most for defense purposes when called upon by their owner/user(s). As always though – perform regular inspections whenever possible between replacements!

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