We offer © 2020 AR-15LowerReceivers.com, a division of Tactical Gear Heads, LLC. The drill stop may loosen, which could cause you to drill too deeply. To do this, you need a pivot pin, a pivot pin detent and a pivot pin detent spring. AR Lower Receiver Step-by-Step Chapter 2 9 Begin by clamping the forging to your milling machine table using the passenger side clamping pad. TOOLING. A mini-mill, like the Sieg X2 shown above, is unarguably the best way to complete an 80% lower receiver: It combines the stability and control of a drill press -- in truth, much more control -- with more cutting power than a handheld router. However, I’ve found that reality doesn’t always align with theory when it comes to 80-percent lowers. But how do you actually complete your 80% lower? But in this article I want to show you how to machine your own lower, bypassing the need for transfer fees and increasing the amount of craftsmanship you can apply to your build. The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. 80% Lowers is a premier retailer and YOUR source for 80 percent lowers, 80% lower jigs, build kits and more. To complete the lower you will be drilling multiple holes and routing two pockets. AR-15 80% Lower. Posted by AR-15LowerReceivers.com on Jul 7th 2020. Very light milling passes can be made with the appropriate chuck on your press in order to smooth out the aluminum face on the interior walls of the receiver, too. Sometimes a hole hasn’t been properly drilled or is partially filled with bits of material, or the magazine well is a little too tight and needs sanding to allow magazines to drop free. If you are tight on space and owning a drill press is not in your future, a polymer lower might be the better option. Jigs are typically categorized by the tools you have at your disposal to complete your lower: A drill press or mill, or handheld router. start drilling, milling, or altering your 80% lower it becomes a firearm and all local, state , and federal firearms laws apply. Using a mill, one can complete a receiver in 15 minutes. In general, I’ve found that forged aluminum lowers tend to be sized correctly. To keep the lower receiver within tolerance, pay close attention to the tolerances as you machine. Take a moment and admire your work. A drill press provides a stable, fixed machining platform for completing your 80% lower receiver. May be redundant: Even though you'll use a router to cut your receiver, you still need a drill press to properly drill the pin holes into the walls of the receiver for your parts kit. Now that you have made the wise decision to purchase the new Juggernaut Tactical AR-15 80% Lower Receiver, you will need to finish the machining procedure. Thread the large Brownells tool from the kit through the pivot pin holes and align the small hole in the tool with the hole for the detent and spring. This instructional guide's shows you how to complete an 80% lower using the Elite Builder 80% Jig and a basic drill press or mini-mill. It is the end user's responsibility to determine if finishing an 80% receiver is … - CNC Gunsmithing Drill Jig and Milling Adapter Kit - 80% AR15 Lower Receiver from Kevin (with solid fire control pocket) - 12” Craftsman Drill Press - 5 speeds (540-3600 RPM) - Drills & Taps: - (C) 1/8 Drill - … ANDERSON MANUFACTURING 80% LOWER RECEIVER JIG -SUGGESTED METHOD- Step #2: Install Template 1 as shown in the picture on the previous page using provided screws. Just be sure to take your time, and always remember to measure twice and cut once. Check it well for any bits of debris and brush them out if you find any. As Ben Franklin admonished: Measure twice, cut once. 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