Can you finish an 80 lower with a drill press?
Recap. A drill press isn’t designed to mill, but lightly milling an 80% lower can be done safely. Completing the receiver requires only polishing the walls and floor with some “drill” milling. Your lower can be substantially finished using a drill press and vertically drilled holes and cuts.
Do you need a jig for an 80 lower?
The single most important tool you need to complete your 80% lower is a jig. The jig is the tool — or really, set of tools — that provides the templates and bits for cutting and drilling your receiver.
Are Polymer 80 jigs universal?
The Polymer80 Universal Jig Kit was created for compatibility with mil spec 80% AR15 lower receivers regardless of polymer or metal construction. The Universal Jig is designed with a super rigid long-fiber nylon composite, which will allow the customer to utilize the jig up to 3 times.
Who can finish my 80 lower?
FFLs, gunsmiths, and machinists can’t loan you tools to build your lower. Anyone who loans you tools or a shop is in violation of the Gun Control Act of 1968. A gunsmith can serialize your 80% lower before or after it’s completed by you.
What machine is required on an 80 lower?
Tools Required Drill press or milling machine. Vise for clamping the 80% jig. Machining oil for lubrication.
Are polymer80 lowers any good?
Yes, polymer 80 lowers are quite good. Our customers have loved them for quite a few reasons: They’re more affordable than metal lowers and jigs. They’re easier to machine and build with. They’re capable of taking some real abuse, as any good AR should.
Are polymer lowers as good as aluminum?
Both polymer and aluminum 80 lowers are worthy choices for any AR-15 build, and either lower will perform admirably for the average builder. Polymer lowers require a bit more patience and care during assembly, though they afford lower cost.
Can I use someone else’s CNC machine to finish an 80% lower?
If you run a machine shop or CNC (even if you’re not a licensed FFL) and you loan out any equipment to anyone trying to complete an 80 lower receiver, you’re now bound by the Gun Control Act’s requirements. That means you need an FFL.
What is a lower receiver jig?
Jigs are kits that consist of metal or plastic plates, bolts, and drill bits and end mill bits. Jigs are made specific to the firearm being built — whether it’s an AR rifle or pistol, or a handgun — so parts and appearances vary.
Can you mill your own lower receiver?
As such, it’s also the rifle’s most regulated element. Mill your own lower receiver at home, however, and you can order the rest of the parts from online gun shops, creating a semi-automatic weapon with no serial number, obtained with no background check, no waiting period or other regulatory hurdles.
Can you use a polymer 80 jig on aluminum?
Using the Polymer 80% Lower and Jig The polymer 80% setup is perhaps the most forgiving when it comes to machining and cost: At around the $100 price point, you’re getting both the lower and jig, and cutting and drilling through this polymer material is much easier than cutting and drilling a hard aluminum alloy.
How to complete a 80 lower receiver?
Drill the receiver holes. We want to drill our holes before we cut the fire control cavity and trigger hole.
Who makes the best 80% lowers?
Best 80% Lowers. 1. Anderson Manufacturing 80% Lower. Anderson Manufacturing is a huge name in AR parts so with this 80% lower, you can rest easy knowing you’re buying 2. 80% Arms Type III Hard Anodized Billet AR-15 80% Receiver. 3. James Madison Tactical Lower Gen 2. 4. Polymer80 G150 AR-15
Should I buy a 80% lower?
People like 80% lowers because it gives the real enthusiast a feeling of having achieved something special with their rifle. Gun owners like to tinker, and finishing off an 80% lower is technical enough to give the amateur gunsmith a good feeling about building their weapon.
Can a 80% lower be a pistol lower?
Finished lower receivers and frames are considered a handgun under FFL laws, but 80% lowers and frames are not since they are non-functional. They are also not considered a firearm under federal law or the ATF.