3d Printed AR-10 (CM901/LE901) Lower Receiver

3d printed AR-10
3d printed AR-10

“This is the FIRST EVER 3d Printed AR-10 (CM901/LE901) lower receiver by JT! OH YES WE DID!!!!!!! Yes people its pure awesome sauce and it has been tested, fired with little to no issues. JT and the gang continue to perfect this design and you are CRAZY not to expect MOAR AR-10 from fosscad on the reg. #MOARGUNS!” – MaDuce (Fosscad member)

If you have been following my blog you already know that JT uses the same da vinci 1.0 printer as I have and was able to create this awesome lower.  If your interested in getting your own 3d printer you should check it out here: XYZprinting Da Vinci 1.0 3D Printer

Just because this particular gun shoots a different caliber it is not a huge advancement in terms of what the end product is. The principle is the same as any other 3d printed gun or homemade gun for that matter. The only reason 3d printers achieve this reaction or attention is because it is something new. Guns have been legally made by individuals in the USA using much simpler technologies as far back as one can look.

This receiver is durable enough to work. The reality is the lower receiver in an AR style weapon does not need to be that strong. Is it as strong as metal? No. Is it as strong as wood? Probably not. Is it strong enough to work? Yes and it has proven just that. The owner/creator claims it shot over 100rds without any issues and no visible wear and tear.

Note the design and photos are from the Fosscad community which you can find here http://fosscad.org/
Screen Shot 2015-03-15 at 1.38.59 PM01 - LthWhlMScreen Shot 2015-03-15 at 1.36.19 PMScreen Shot 2015-03-15 at 1.40.18 PMScreen Shot 2015-03-15 at 1.44.02 PMScreen Shot 2015-03-15 at 1.40.47 PMScreen Shot 2015-03-15 at 1.41.17 PMScreen Shot 2015-03-15 at 1.41.45 PMScreen Shot 2015-03-15 at 1.42.54 PM


76 thoughts on “3d Printed AR-10 (CM901/LE901) Lower Receiver

  1. Pingback: SayUncle » DIY
  2. Pingback: DIY | TiaMart Blog
  3. This is so much hype and is essentially meaningless, except to sell printers and fool the public on the social issue of dangers of guns. All they’re doing is making non-essential parts for the guns that could just as well be made out of hardwood or some other material-they can’t make the parts like the barrels that bear the pressure of the bullet actually being fired. You’ll notice the main part of the gun is metal. TSA stops and checks a roll of quarters to make sure they are not gun barrels.
    All They have accomplished is advertising for these printers and taking advantage of reporters and websites hungry for sensationalism articles. These printers are not the Star Trek replicators and it takes extensive programming skill and time and expense (and their printers and software you have to buy) to create something that is FAR CHEAPER to buy then to make your self.

    1. The lower is the regulated part of a gun, which is a critical fact when you say something like “All they’re doing is making non-essential parts for the gun”.

      I can buy every part of an AR except that lower without any paperwork, any background check, anything. So it’s not “non-essential” by any means.

      1. Yes you can buy a lower receiver without paper work, it’s called an 80% lower. Also many have made lowers from welded or bolted together sheet metal so…

      2. You are correct that the lower is the only part that is ‘regulated’, but this is only a stripped lower, it doesn’t print the springs and trigger assembly needed to fire a bullet. The component they’ve printed isn’t ‘regulated’.

        1. The lower receiver does NOT have to be fully built to qualify as a registered firearm. It can be nothing more than a fully milled out block of metal, and the federal government still considers it a firearm. No springs, triggers, detents, or pins necessary. The part ready to accept all these things is considered the firearm. That is why an “80%” lower is NOT considered a firearm, and thus not regulated, because it is not yet ready to accept parts. It must first be finished.

        2. I am a licensed firearm dealer… The lower receiver, whether it’s stripped or not, is regulated! All the other parts required to build a fully functional firearm can be purchased without any registration or back ground check.

          1. The lower assembly that is the key assembly to the ar-15 family. It is regulated ( sort of ) You can make one – for yourself and no one else from one of the 80% completed lower and be perfectly legal without having to serialize and register the lower assembly – federally. You can not however make a bunch of them and give or sell them without registering a serial number and be a FFL holder.

          2. Dear Tim,
            Re introduce yourself to the ATF website. An 80% lower IS NOT considered a firearm and is not regulated. So NO not all lowers are regulated. I sense that you are a troll trying to start a fire that is not needed.

          3. Tim, Don didn’t read what you posted and to what it was referring. You never mentioned an 80% lower, you were specifically addressing the finished lower, with or without parts. Everyone else got it.

          4. Correct and the BATFE specifically states on their site it is ILLEGAL to print a lower receiver. Get that morons ILLEL, look it up

  4. A few years ago, it was possible to purchase a stripped lower without any paperwork as it was classified as “other part” by dealers. NOW, because a change in BATFE regulations, the lower receiver is now considered purchasing a weapon. So the federal forms need to be completed. AND, because you can build a pistol or rifle, you might need to get a permit to purchase a handgun depending on which state you live in…

    1. What are you talking about? The lower has the serial number. It IS the weapon as far as the BATFE is concerned. Always has been.

  5. One of the most important parts of the AR10 for maintaining accuracy is the pistol grip. Obtaining proper alignment to the rifle, proper sight alignment, proper trigger pull and reset, and comfortable shooting and stability for follow-up shots can be narrowed down to just a few areas, and the pistol grip is definitely a critical component.

  6. I couldn’t know as much around the technology and I didn’t would like to mess things up.
    They were fused with polyswitch auto reset fuses, but instead of fusing every one at 500m –
    A, these folks were fused in pairs with 1A polyfuses, connected straight away to the PC
    strength 5V rail. The tariff of 3D printing is continually coming down, and new cheap
    3D printing services are appearing online every month.

  7. Few questions, What caliber is that? what kind of material did he use to make it? when did it break? any tips for someone new to this 3D printing?

Leave a Reply