How To And Tips For Milling An AR Lower From An 80%




What do you think about this video?

usmcdoc14: I am replying so I can delete your post. TAS Firearms, If you wish to get exposure off my work then you can send me some of your products to build and evaluate. There is no free lunch, only my free instructional videos

Drew4078: Great video! Thank you for the big help in many areas. This video is just perfect. I plan to buy the same milling machine from the harbor freight here in Washington. Thank god my state will allow me to build my own crap. I too am serious about this crap! Any ban is BAD! Your bolt tatts are freaking sweet to bro, great idea. Thanks again.

UnaSolida: Excellent PSA brother. But you could finish an 80% lower with much less than all that, nevertheless awesome demonstration. Btw I thought a "0% lower" was just a brick of aluminum lol. 

GunRun13: Did you use a 7075 receiver or 6061 receiver?

Chris Turnblom: I disagree with your definition of assault weapon. The term is completely ambiguous. If I assault you with a spoon it can be considered an assault weapon. Just because a gun shoots automatically does not mean you can only use it to assault people. Don't give the idiots any ammo.

rdsii64: finally knocked out mine last night. I was up until 3am. its not as hard as most people think. YOU DO HAVE TO PAY ATTENTION TO WHAT YOU ARE DOING THOUGH!! I under cut my fire control pocket by 2 or 3 thousandths because I knew being a novice it was going to come out looking rough at best. One final skim pass this morning and this baby is ready for a parts kit.

FuYing Bro: I love your PSA. Although I did an 80% on a $130 drill press and $40 x/y vice. Of course it didn't come out as good as yours. I was just saying that you can do it with less that what is shown.

Christians.Vs.illumination: USMCDOC14 your video has helped me tons! I would love to see you build a Radius 1911 build.

Zakk Young: taking a weekend with some bros and making some AR-15s sounds awesome. good video. Might ahve to see if my grandpa wants to guide me with this 

stephen meloche: Need your help I over cut my lower and im hopping its salvageable the first cut back part were the pin goes to attach the upper to the lower was cut to deep im hopping that as long as I cut the trigger group out it will be ok. How can I send you a photo to show you what im talking about or can you tell me if that will not change the fire control groups functionality

Smitty: Lol oh look its all shinny and #@%& ... DONT TOUCH IT leave it alone You had me laughing 

Matt Smith: When the second amendment was written all civilians had or could own the same weapons as the military, which is the way it was intended, no tax stamps and finger print bullcrap...

Emil Pienczykowski: Thank you for your patriotic spirit and teaching. Hope to see more people like you.

pinkeye00: Send me a check bitch.

Kennard Lang: Thanks Doc. Great grief-saving tips. Getting ready to tackle two -15's and a -10 with ambiguous instructions; a decrepit, somewhat square drill press; suspect jigs; patience; calipers; and your gracious demo. Flew Spectre over Mog and other places in the 90's and felt honored to let you guys sleep peacefully. Semper Fi. 

megadeth22885: a drill press with a 2-axis milling vise for a drill press is realistically all you need to do this, $100 for a cheap drill press and another $60 for the vise.. plus the proper endmill bit

Heriberto Venegas: On your blueprints is there any GD&T involved. I would like to calculate some steel-safe nominals and keep it within tolerance. 

michael neyman: mute, take it easy pencil neck

rdsii64: Just installed the absolute DRO from igaging on my z axis. It was a pretty strait forward process. I'm not to concerned about DRO for the other two axis' yet since the lower is mounted up in a jig. If you haven't yet. you gotta get the Tormach Tooling system. No more hitting your drawbar with a hammer to get the collet out. The starter set up for a manual mill with an R8 spindle is just under $190.00 plus shipping.

William Hall: Great video! Thank you

david smith: thanks for the video I used my buddys mill after watching this video it took me 4 hours to mill it but it turned out great BTW first time I ever used a mill

ChickenPimp J: Where did you get your spec papers? I ordered two of the alum lower 80's and got nothing as far as drilling depths. I didnt get any specs nor, even, a website to go to for looking at any specs. If I ever order any more Ill be going through a different distributor (unless the guy starts adding some info on machining and building these things). NM, Im checking your website, now...maybe Ill find what I need. Semper Fi!

MrBlurry2011: Are the AR Jigs universal? meaning can i use one jig on 2 different 80% lowers? Or does each lower require its own unique Jig?

matt lemon: bless you for teaching the populace.... knowledge should be open and free for the people. Governments will try. But people like you are keeping the hope alive.

gorgeous george: yes stop calling the ar 15 an assault weapon,,,just because many of your heros like diane feinstein call it that,,,its not,,it is a semi auto rifle.dont work against the gun owners movement,....

Haywood Jablomie: What a GREAT guy!! A real American!

Michael Costa: I am with you, I am not a criminal. 

Kyle Hobson: Hi im 14 and really want an ar 15 im one of those "zombie prepper" types and want one for my survival kit and also for hunting as I know that the ar 15 is a very reliable and comfortable gun for me I want to know if you have any idea if it would be legal for me to manufacture and own one please reply it will be very helpful btw I will be 15 before I can get ough money to buy the parts

Jordan Baumgardner: Thank you, for helping truly protect this land and it people.

Anthony Seneck: I Agree with everything you have said in this video

AZ DieselTech: No gloves! Everyone wants to wear gloves. Glad that you're not, and you made a point of stating the obvious for the beginners. You snag a finger you can pull it away. You snag a glove and it pulls you in, you have ground beef. Great video. Learned some things, and knowledge is the most important thing we can arm ourselves with. 

Y Pop: I had to unwrap a man's hand from a drill press because he was wearing gloves! I never ware gloves when machining! 

rdsii64: Well I pulled the trigger last night at work. During my break, I ordered a solid column Sieg X2 and a belt drive conversion. I'll order tolling later this week. looking forward to going back over this video after my mill has been delivered. Lucky for me the 80's I have came with accurate drawings. Now its lots of studying and messing around with scrap aluminum to learn my mill. The fist hog I kill with my new rifle I will dedicate to freedom and the second amendment.

Tom Gertenhäuer: Hey i got a question for you, im about to start on my first Ar build, im using the jig from 80% the easy jig, and the only things i need are the drill stop collar and the router, (and of course the complete upper receiver) and i was wondering what size and type of router bit would you suggest to use on finishing up my lower, i have the general idea of how to do it, just need some specifics now on the router bit to use

reado33: can someone please tell me how many times this guy says OK is it more or less than 761 times?????

MasterK9Trainer: I appreciate you putting yourself "out there" and it's one thing to read books or plans, but it's invaluable to see someone actually do the work to demonstrate what it takes, what is required and how hard or easy it is to do a project. I have two brothers and we were born in Quantico, Camp Lejune and Cherry Point, so I support marines. 

Argelio Del llano: What's the law on this 

Cameron Henrichs: Could you mill mine for me ? 

nunya biness: For those who have a better mill, use a 7/16 cutter. The radii in the FCG pocket are supposed to be .218. I run a 4 flute 7/16 with a 1.3" cut depth at 1,000 RPM for most of the process (I do the main pocket in two steps), then kick it up to 2,500 for final pass, climb milling ~.010" material. Personally, I like to cut 7075 al dry; easier chip clearing, and won't hurt cutters at all if your speed and feeds are right. Having said all this, if you're using a bench top, as he mentioned, they simply won't hold the tolerances, and the lower pocket that is supposed to be .438" (7/16) at the selector lever will grow on you. I spent a long time with the little Seig/HFT mill; it'll get the job done, but you have to take light cuts and constantly check your dimensions. Tighting the gibs will help with chatter, but makes those little cranks very tight, which *will* cause carpel tunnel over time.

Gabe Hartman: DOC are you a green shoe or brown shoe, my brother is a retired Navy surgeon, who was assigned to a Marine unit. Oh and thank you for this info, I love it.

Haywood Jablomie: Is there such a thing as an 80% .50 cal kit??

Steven Ford: Great skills, nice work, I'm a fan. O.k. Now that it it milled what about the finish? Do you prefer to powder coat or anodize and die? I'll keep watching your stuff. Love your abilities and your attitude.

rdsii64: Been watching your videos. Love your work. I have two DPMS pattern .308 80 pecent lowers in my safe. I am about to pull the trigger on a solid collum HiTorque mini mill. Once I save for a three axis DRO and the tooling, I'm all in. Hell I might even try to make a video of my progess. If I take it that far I will be sure to credit you as a source. Semper Fi Brother

YungBossk: Quick question. I see your 80% doesnt have a trigger guard. But on the website you give billet80 all the 80% they have come with non removable trigger guard. Did yu buy lower from different website? Just need to know bcus I need 1 without trigger guard for the grip I am using

reado33: OK OK OK OK OK

Stresscat1: I did not see the VZ-58 build on your sight. Could you do a VZ-58 build using the Hellbox Armory 80% receiver?

xmodfreak2011: That calipers advice is golden. Was using some random manual calipers (like ruler status, not even a dial), totally read it wrong like an idiot, and punched thru the floor of my lower. Epic. Fail.

Sean Talley: You sir are my freaking hero I really cant express it enough. They can take my guns from my cold dead hands. 

Schools: Learn how to get phlebotomy training in California! The job pays decent money for the amount of schools needed to graduate.
Rating:
How to and tips for milling an AR lower from an 80% 4.8 out of 5

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How to and tips for milling an AR lower from an 80%