AR-15 Jigs: Precision Tools for Your 80 Percent Build
What Is an AR-15 Jig?
An AR-15 jig is a specialized tool used to machine and complete an 80 percent lower receiver. These jigs provide precise guides for drilling and milling, ensuring your lower is properly finished and ready for assembly. Whether you’re a seasoned builder or a first-time DIY enthusiast, an AR-15 jig is essential for achieving professional-level results.
Why Use an AR-15 Jig?
1. Accuracy
Jigs ensure precise drilling and milling, reducing the risk of errors that could compromise your firearm’s performance.
2. Ease of Use
Designed for DIY builders, AR-15 jigs simplify the machining process, even for beginners.
3. Versatility
Many jigs are compatible with multiple lower receiver designs, making them a versatile addition to your workshop.
4. Cost Efficiency
Completing an 80 percent lower with a jig is more affordable than purchasing a pre-machined lower.
Types of AR-15 Jigs
1. Router Jigs
Router jigs are the most popular option for completing AR-15 lowers. They guide a handheld router for milling out the fire control pocket and drilling pinholes. Benefits include:
• Precision cutting
• Compatibility with various routers
• Compact design for easy storage
2. Drill Press Jigs
Drill press jigs use a drill press to complete the milling and drilling process. They are ideal for builders who already own a drill press and want to ensure consistent results. Benefits include:
• Stability during machining
• Reduced risk of misalignment
• Long-term durability
3. Universal Jigs
Universal jigs are compatible with multiple lower receiver platforms, such as AR-15 and AR-10. These jigs are perfect for builders who work on various firearm projects.
How to Use an AR-15 Jig
Step 1: Choose the Right Jig
Select a jig that matches your lower receiver and preferred machining method (router or drill press).
Step 2: Secure the Lower Receiver
Place your 80 percent lower into the jig and secure it tightly to prevent movement during machining.
Step 3: Drill Pilot Holes
Use the jig’s guides to drill the necessary pinholes for the trigger and safety selector.
Step 4: Mill the Fire Control Pocket
Follow the jig’s instructions to mill out the fire control pocket. Use a router or drill press, depending on your jig type.
Step 5: Finish and Test
Smooth out any rough edges with sandpaper or a file. Test the completed lower for proper fit and functionality.
Tips for Success
• Invest in Quality Tools: A high-quality jig and router or drill press ensure accurate results and minimize errors.
• Follow Instructions: Each jig comes with specific instructions—read them carefully before starting.
• Practice Safety: Wear safety glasses and gloves while machining your lower receiver.
• Work Slowly: Take your time to ensure each step is completed with precision.
FAQs About AR-15 Jigs
Do I need a background check to buy an AR-15 jig?
No, jigs are not classified as firearms and do not require a background check.
Are jigs reusable?
Yes, most jigs are reusable and can be used for multiple builds.
Can I use any router with a router jig?
Most router jigs are compatible with standard routers, but always check the manufacturer’s specifications for compatibility.
Visit Route 66 Guns & Ammo Today
Ready to complete your AR-15 build with precision? Proudly serving Barstow, Hesperia, Apple Valley, Phelan, and Victorville, we’re here to support your custom firearm projects. Stop by or contact us today for expert advice and assistance. While 80% lowers are not longer legal in California, we are happy to help you with any other build.
