May, 18

AR 15 Auto Sear Jig: The Ultimate Guide for DIY Enthusiasts

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AR-15 Auto Sear Jig, a technical term that may sound unfamiliar to those who are not familiar with firearms. However, for gun enthusiasts and experts alike, this tool is an essential component in enhancing the performance of their AR-15 rifles.

The AR-15 Auto Sear Jig is a device designed to help gun owners improve the trigger pull of their rifles by allowing them to adjust the sear engagement angle. This feature results in crisper and smoother trigger pulls, providing shooters with better precision and accuracy when using their firearms.

If you're looking for ways to enhance your shooting experience or want to learn more about firearms technology, then keep reading this article. As we dive deeper into what makes the AR-15 Auto Sear Jig an essential tool for gun enthusiasts and how it can help improve your rifle's performance.

AR 15 Auto Sear Jig: Everything You Need to Know

The AR 15 is a popular rifle among gun enthusiasts, hunters, and law enforcement. It is known for its versatility, accuracy, and reliability. One of the modifications that can be done to the AR 15 is adding an auto sear jig.

What Is an AR 15 Auto Sear Jig?

An auto sear jig is a modification that converts your semi-automatic firearm into a fully automatic one by allowing it to fire multiple rounds with just one pull of the trigger. It consists of several parts including a disconnector spring, selector lever spring, disconnector assembly pin and retainer pin.

The installation process requires mechanical expertise as it involves removing certain parts from your firearm and replacing them with new ones. Additionally, modifying any firearm must comply with federal regulations in order to remain legal.

Benefits of Adding an AR 15 Auto Sear Jig

Adding an auto sear jig can provide several benefits for those who own an AR-15 rifle:

Greater Control Over Firearm

When using your rifle in full-auto mode you have greater control over firing sequences when compared to semi-auto mode which can help in situations where rapid-fire or suppressive fire are needed.


With this modification installed on your rifle you will be able to use it as either semi-automatic or fully automatic depending on what situation calls for without having any issues switching between modes quickly if need be thanks due how simple this modification works.

Increased Accuracy

Full-auto mode allows experienced shooters who understand their weapon well enough greater accuracy during rapid-fire situations compared than had they been using just Semi-Auto Mode considering all variables are constant like distance between target.

Comparisons: Full-Auto vs Semi-Automatic Firearm

There are some key differences between full-auto firearms such as those converted by adding our mod versus standard semi-automatic rifles without the modification. Below is a table showing some of the differences between the two modes.

Full-Auto Semi-Automatic
Can fire multiple rounds with one trigger pull One round per trigger pull
Higher rate of fire possible Lower rate of fire compared to full-auto
Requires greater control and training for effective use. Easier to handle, especially for beginner shooters.

Tips on Using AR 15 Auto Sear Jig

If you are planning on adding an auto sear jig to your rifle, here are some tips that can help:

Get Professional Help

While this modification may seem simple enough many things could go wrong during installation making it not worth it in our opinion without professional help. A licensed gunsmith or firearm expert should always be consulted before attempting any modifications.

Practice Safe Handling

With great power comes great responsibility; make sure you know how to safely handle your new configuration once modified as well as keep all federal regulations in mind when taking into account what utilizes full-auto mode has.

Use Proper Ammunition

Full-auto firearms require different types of ammunition than semi-automatic ones due their higher rates-of-fire so make sure you research thoroughly which ammo will be compatible with this type equipment ahead time so as not waste resources.


Adding an AR-15 auto sear jig is a popular modification that provides several benefits such increased accuracy and versatility but can present legal hurdles if done improperly. If you decide to install one please consult professional expertise along with thorough research ahead time before proceeding further even though it may seem straightforward at first glance!


What is an AR-15 auto sear jig and how does it work?

An AR-15 auto sear jig is a tool used to aid in the installation of an auto sear into an AR-15 rifle. The sear is responsible for releasing the hammer when the trigger is pulled, allowing the rifle to fire. Installing an auto-sear into your AR-15 enables fully automatic firing mode, which allows you to shoot multiple rounds with a single pull of the trigger.

The jig itself typically consists of several parts that are designed to fit together perfectly and hold various components in place while you install them. It includes guides that help align all of these pieces accurately for proper functionality.

To use it, first, you need to disassemble your lower receiver from your upper receiver – this will give clear access where these components are installed. Then attach each component correctly onto its corresponding part on the jig through instructions given by manufacturers or online tutorials as step-by-step guidance based on diagrams or videos available across multiple platforms such as YouTube or forums dedicated for gun enthusiasts.

Is it legal to own and use an AR 15 Auto Sear Jig?

It depends on where you live since different states have their own set of laws about firearms regulation. In general terms, owning one isn't illegal per se if there's no law prohibiting its possession/usage in your state/country; however having one could put yourself at risk if you do not qualify under certain criteria (such as being licensed under Federal Firearms License) which permit ownership within specific federal/state/municipal regulations.

Moreover, even though owning one might be legal in some areas – using/installing without necessary permits/licenses can lead up-to criminal charges based on local firearm laws.

Do I need any specialized expertise or tools for making use of my ar 15 Auto Sear Jig?

If this is your first time working with firearms then installing a full-auto sear on your own can be a daunting task, and you must exercise safety measures by reading up on the relevant manuals, tutorials and other resources available online. Any mistake while following these instructions could lead to fatal accidents if not handled properly.

Having said that, it’s always best practice to get help from someone who has experience with firearms or gunsmithing when working with something as potentially dangerous as an AR-15 auto sear jig.

You would also need some specialized tools for installation purposes such as punch sets or vice blocks which can hold the jig in place during assembly so parts are aligned properly while being assembled. The good news is that most jigs come pre-packaged along with all necessary components required for installation.

What advantages does using an AR 15 Auto Sear Jig have over a regular semi-automatic rifle?

Using an AR-15 auto sear jig allows you to convert your standard semi-automatic rifle into a fully automatic one without buying separate firearms altogether – saving both time and money. This means that you get more firepower than before in terms of rounds discharged per trigger pull making it ideal for those who participate in competitive shooting events or hunting activities where rapid-fire might be needed.

However, owning/using full-auto guns are subject to regulations set forth by various federal/state/municipal laws thus it's important that proper permits/licenses are obtained before doing so.

What should I consider before purchasing my own ar 15 Auto Sear Jig?

Before purchasing any firearm related equipment including ar 15 auto sear jigs users should do their research about vendors/suppliers reputations within the industry – there have been instances where manufacturers haven't tested their products thoroughly enough resulting in malfunctioning parts leading towards deadly accidents/catastrophic failure of arms themselves (which leads up-to losing significant amounts of money).

It’s also essential to check whether owning this kind of equipment is legal within your state/country. It's always best practice to purchase from reputable sources and check for any warranties or guarantees provided by vendors so that you can have peace of mind knowing that your investment is protected in case something goes wrong with the product.

Finally, users should be aware of all applicable local firearms laws which govern possession/usage when owning full-auto sears and get necessary permits/licenses before using/installing them into their AR-15s to avoid facing criminal charges as a result of non-compliance.

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