80 Lower Jig: Top 5 Must-Have Features in 2024!

Master Your Build: How to Use an 80% Lower Jig for DIY Gunsmithing

If you’re searching for an 80 lower jig, you’re likely interested in a DIY approach to firearms assembly. 80 lower jigs offer a unique opportunity to build your own AR rifle or pistol from the ground up. To get you started quickly, here’s a brief overview to address your immediate questions:

• What is an 80 lower jig?: A toolset designed to help you finish an 80% lower receiver.
• Why use one?: It simplifies the drilling and mechanical processes, offering precision and efficiency.
• Do you need a license?: No, these jigs are not considered firearms, so no license is required to buy or own them.

DIY gunsmithing has taken off recently, with enthusiasts eager to customize their builds without needing a fully completed firearm. 80 lower jigs are crucial in this process, allowing builders to convert receivers into functional parts with high accuracy. Whether you’re a beginner or a seasoned builder, these jigs offer the precision and consistency needed to ensure success.

To make the best decision on purchasing an 80 lower jig, consider key features such as material quality, compatibility with different firearms, and ease of use. This article will delve into these aspects, guide you through the various types of jigs available, and offer insights into legal considerations.

Understanding 80% Lower Jigs

An 80% lower jig is a specialized toolset designed to help you transform an unfinished lower receiver into a fully functional part of a firearm. Think of it as a template that guides you through the precise drilling and milling processes required to complete the lower receiver. This is essential for building various types of rifles and carbines, including AR-15s, AR-308s, AR-10s, and AR9s.

The term “80%” comes from the fact that the lower receiver is 80% complete and requires additional machining to become functional. These jigs provide the necessary framework to complete the remaining 20%, making the process accessible even for beginners.

How 80% Lower Jigs Work

The core functionality of an 80% lower jig lies in its ability to simplify the complex mechanical processes involved in finishing a lower receiver. Here’s a step-by-step breakdown of how these jigs work:

1. Templates and Guides: The jig kit includes templates and guides that align with the unfinished lower receiver. These templates ensure that you drill and mill in the exact locations needed.

2. Tools and Measurements: You’ll need basic tools such as a drill press, a router, and various drill bits and end mills. The jig provides precise measurements and physical guides to help you make accurate cuts and holes.

3. Mechanical Process: Secure the 80% lower receiver in the jig using clamps or a vise. Follow the jig’s instructions to drill holes for the trigger assembly, safety selector, and other essential components. Use the router to mill out the fire control pocket.

4. DIY Process: One of the best aspects of using an 80% lower jig is the DIY nature of the project. It allows you to build a firearm at home without needing advanced machining skills. The jigs come with detailed instructions, making it easier for beginners to follow along.

Legal Status

Understanding the legal status of 80% lower jigs is crucial. Under federal law, an 80% lower receiver is not considered a firearm. Therefore, purchasing and owning an 80% lower jig does not require a license. However, once the lower receiver is completed, it becomes a firearm and must comply with all applicable laws.

While federal law permits the use of 80% lower jigs, state laws can vary. Some states have specific restrictions or bans on unfinished lower receivers and DIY firearm builds. Always check your local regulations before starting your project.

By using an 80% lower jig, firearms enthusiasts can take a hands-on approach to building their own rifles and carbines. These jigs offer a blend of precision, efficiency, and accessibility, making them a popular choice for both beginners and experienced builders.

Top Features to Consider in 80% Lower Jigs

When selecting an 80 lower jig, several features are crucial for ensuring a smooth and successful build. Let’s explore these key aspects:

Material Quality and Durability

The material of your jig plays a significant role in its longevity and performance.

Aluminum is a popular choice due to its strength and durability. It’s available in two grades: 6061 and 7075. While 6061 is softer and easier to machine, 7075 is stronger and the industry standard for “real” lower receivers. However, for most DIY projects, 6061 offers sufficient strength and is more corrosion-resistant.

Steel jigs provide excellent durability and can withstand heavy use. They are ideal for those planning to build multiple lowers over time. However, they are heavier and can be more challenging to work with compared to aluminum.

Polymer jigs are lighter and easier to handle but might not offer the same level of durability as metal jigs. They’re suitable for beginners due to their ease of use but may not be the best choice for repeated use.

Compatibility with Different Firearms

Choosing a jig that matches your desired firearm type is essential. Here’s what to look for:

AR-15 Jigs are designed specifically for AR-15 lower receivers, which use 5.56 or .223 ammunition. They are not compatible with AR-10 receivers, which use 7.62 NATO rounds.

AR-10 Jigs are tailored for the larger AR-10 receivers. If you plan to build both AR-15 and AR-10 lowers, consider a multi-platform jig which can handle AR-15, AR-9, and .308 lowers.

Ease of Use for Beginners

User-friendliness is a critical factor, especially for those new to DIY gunsmithing. Look for jigs that come with comprehensive instructions and are designed for easy setup and use.

Instructions: Clear, step-by-step guides are invaluable.

Tool Requirements: Ensure you have the necessary tools, such as a drill press and router. Some jigs may require additional specific bits and end mills, which should be included or clearly listed in the kit.

User-Friendliness: Features like easy-to-follow templates and built-in guides can significantly reduce the learning curve. Multi-platform jigs that accommodate various lower types without complicated adjustments are particularly beneficial for beginners.

Popular Types of 80% Lower Jigs

When it comes to building your own firearm, choosing the right 80% lower jig is crucial. There are three main types of jigs: router-based, drill press, and multi-platform. Each has its own strengths and weaknesses, so let’s dive into what makes them unique.

Router-Based Jigs

Router-based jigs are a popular choice for their speed and precision. These jigs use a standard woodworking router to complete the milling process, making them accessible to many DIY enthusiasts.

Speed and Precision: Router-based jigs are known for their ability to quickly and accurately finish an 80% lower. The router’s high RPMs allow for smooth and precise cuts, which is essential for a functional firearm.

Equipment Needed: To use a router-based jig, you’ll need a compatible router, end mills, and drill bits. Ensure you have everything you need to get started.

Drill Press Jigs

Drill press jigs offer stability and accuracy, making them a great option for those who want a more controlled milling process. These jigs use a drill press to guide the milling and drilling.

Stability and Accuracy: Drill press jigs provide a stable platform, which can result in more accurate cuts and holes. The drill press’s fixed position reduces the chance of errors, ensuring a high-quality finish.

Setup Complexity: While drill press jigs are stable, they can be more complex to set up. Ensuring the jig is properly aligned with the drill press is crucial for achieving accurate results. However, once set up, the process is straightforward.

Equipment Needed: You’ll need a drill press, various drill bits, and end mills. These jigs often come with detailed instructions to help you set up and use them effectively.

Multi-Platform Jigs

Multi-platform jigs are versatile and cost-effective, designed to work with multiple types of firearm lowers, such as AR-15, AR-10, and AR-9.

Versatility: One of the main advantages of multi-platform jigs is their ability to handle different models. This flexibility means you can use the same jig for various builds, saving you money and storage space.

Cost-Effectiveness: Investing in a multi-platform jig can be more economical in the long run. Instead of buying separate jigs for each type of lower, you only need one versatile jig.

Supported Models: Multi-platform jigs support a wide range of models, making them an excellent choice for avid builders who work on different firearms.

Legal Considerations and State Restrictions

When it comes to building your own firearm, understanding the legal landscape is crucial. The laws surrounding 80% lower jigs can be complex and vary significantly from state to state. Let’s break down the key points you need to know.

Understanding Your State’s Regulations

Federal Laws: On the federal level, the ATF does not consider an 80% lower a firearm. This means you can buy and own one without going through a background check. However, once you complete the lower, it becomes a firearm and must comply with all federal laws. A new rule is changing the definition of a firearm to include unfinished parts like the frame of a handgun or the receiver of a long gun. This rule will require these parts to have serial numbers and be sold by licensed dealers who must run background checks.

State-Specific Bans: Several states have either restricted or banned the sale, transfer, and ownership of 80% lowers, firearm blanks, and other gun parts. For example:

• California: Requires serialization and registration of 80% lowers.
• New Jersey: Bans the sale and possession of 80% lowers outright.
• New York: Similar to New Jersey, New York has stringent laws against 80% lowers.

It’s essential to confirm whether your state has any restrictions before making a purchase.

Purchasing and Shipping Guidelines

Online Sales: Purchasing an 80% lower jig online is straightforward, but you must ensure compliance with both federal and state laws.

Shipping Restrictions: Due to varying state laws, shipping 80% lowers and jigs to certain states is prohibited. Always check the shipping policy before placing an order.

Compliance: To stay compliant, ensure that you:

• Understand Federal Regulations: Familiarize yourself with ATF regulations and any pending changes.
• Know Your State Laws: Research your state’s specific restrictions on 80% lowers and related components.
• Check Shipping Policies: Verify that the retailer can ship to your state.

Being aware of the legal considerations and state restrictions can save you from potential legal issues. Always do your homework and consult with legal experts if necessary.

Frequently Asked Questions about 80% Lower Jigs

Are 80 Lower Jigs Illegal?

Short answer: No. Under federal law, 80% lower jigs are not considered firearms. This means you can purchase and own them without a license. However, the legality can vary by state. For instance, California, New Jersey, and New York have stricter regulations. Always check your local laws before purchasing.

Federal Perspective: The ATF classifies an 80% lower as a non-firearm until it is fully completed. This means you can buy the jig and the lower without going through a background check or FFL (Federal Firearms License).

Usage Restrictions: While the jig itself is legal, completing an 80% lower into a functional firearm must comply with federal and state laws. For example, you cannot manufacture a firearm with the intent to sell it without the proper licensing.

Can You Use a Polymer 80 Jig with an Aluminum Lower?

Material Compatibility: Generally, no. Polymer 80 jigs are specifically designed for polymer lowers. The cutting bits and guides in a polymer jig may not be suitable for the harder aluminum material, risking damage to both the jig and the lower.

Tool Recommendations: If you’re working with an aluminum lower, invest in an aluminum-specific jig. These jigs come with the appropriate cutting bits and guides needed for the harder material, ensuring a smoother and safer milling process.

“I have made 3 Polymer80’s, and the worse problem I have found is finding the best tool speed. Another source I know bought a carbide milling bit with great success…far better than the tool steel bits that come with the P80.”

How Deep to Drill When Using an 80 Lower Jig?

Drilling Depth: The depth you need to drill varies depending on the type of firearm you are building. For an AR-15 lower, the trigger pocket typically needs to be drilled to a depth of around 1.25 inches. Always refer to the specific instructions provided with your jig.

Technique: Start with a shallow depth and gradually increase to the required depth. This helps maintain accuracy and reduces the risk of damaging the lower.

Safety Tips:
– Wear Safety Gear: Always wear safety glasses and gloves to protect yourself from metal shavings.
– Secure the Lower: Use a vise and clamps to hold the lower securely in place during the milling process.
– Use Appropriate Tools: Ensure you are using the correct drill bits and end mills for the material of your lower.

“Never used one but 80percentarms has nice looking billet lowers in AR15 & AR308. I used their new Easy Jig Gen 2 & a router to do my 80%s. Also can get New Frontier Armory style AR9 & AR45 80% lowers now. I have one of each laying around waiting to be built over the winter. The Easy Jig Gen 2 can supposedly do them all.”

Next, let’s explore the benefits of using an 80 lower jig and how it empowers DIY gunsmiths.

Conclusion

In summary, 80% lower jigs offer a fantastic entry point for DIY gunsmiths and enthusiasts. These jigs simplify the process of completing lower receivers for AR-15s, AR-10s, and other platforms. They provide the necessary precision and guidance to ensure a high-quality build, even for beginners.

Recap

Using an 80% lower jig allows you to:

• Complete your 80% lower in less than an hour: With a well-designed jig, the process is quick and efficient.
• Maximize consistency between projects: High-quality jigs ensure that each build meets your expectations.
• Reuse your jig for multiple projects: Durable materials like steel and aluminum make these jigs a long-term investment.
• Follow clear and concise instructions: No prior experience is needed, making these jigs accessible to everyone.

DIY Empowerment

Building your own firearm is not just a rewarding experience; it also empowers you with the knowledge and skills of gunsmithing. The sense of accomplishment and the ability to customize your build to your exact specifications are unparalleled. Plus, the community and resources available, including YouTube tutorials and written guides, make the journey even more enjoyable.

Daytona Tactical Offerings

At Daytona Tactical, we understand the passion for DIY gunsmithing. We offer a range of high-quality 80% lower jigs and related tools to make your project a success. Whether you’re a seasoned builder or just starting, our products are designed to meet your needs.

Explore our collection of 80 lower receivers and jigs to find the perfect fit for your next build. Our team is always here to support you with expert advice and top-notch customer service.

Ready to start your next project? Visit our 80 lower receivers and jigs collection and master your build today!