I Printed an AR-15 

mac and windows?

@@derrek4991 Mac is S&W, Windows is Sig

@@kai.05 what about colt? commodore?

@@derrek4991 colt would be colt ofc. Commodore is psa

@@kai.05 im guessing berreta would be the goddamn IBM acorn

Agreed! Most home-made guns are aesthetically awkward and are not "pretty" to look at because they have to conform to spec uppers. This design gets rid of that need and makes a beautiful to behold design.

​@@TheJBerg kinda reminds me of the CR-21

Moon gun

Only change would be a picatinny rail point on top of the fore end handguard, for iron sights. Otherwise I would buy this design over a good number of current accessory options at most local shops! Ergonomics matter, especially when you spend long days in the field. No rough edges to dig into your side or back when carried with a sling. textured grip along the mag-well. S M O O T H stock design. Absolutely gorgeous.

I agree. This is one of the better looking 3D printed guns I’ve seen.

PSR?

hahaha ... but for real it does look pretty dam good ;).

There’s some pretty good ones like the amigo grande or the FGC but generally ye a lot are pretty ugly.

I’ve seen some pretty good looking Mac-11 builds out there and there are designs for one that doesn’t need the upper receiver, but it’s still in the early stages

The TacDaddy has joined the chat…

😂😂😂😂😂😂

wut 😂

With a 3d printer, you could actually print a lefty upper. I'm not 100% sure if flipping the bolt would eject cases correctly..

was shocked a lefty would be interested in this then I realised you mean your hands

Not sure he'd be imprisoned..

Why not both?

KelTec probably.

Guy is on the spectrum classic Asperger’s very precise and focused yet spastic

@@ntshdff cant a man explain something precisely and enthusiastically without being on the spectrum

Give him a booth!

Yeah fuck SHOT Show! It's not even open to the public so you can't even buy guns there! The only people it's open to basically are business bureaucratic guys as well as the press. A real gun show would let the public in and be able to buy everything there!

@@dividedbyzero4660 Why even bother with SHOT since it's not open to the public, just bureaucratic guys and the press? Might as well just go to a proper gun show where the public can go in and buy everything there and set up shop.

@@Cacowninja video idea, sneak into shot show.

@@cptweed3717 Joke/sarcastic or even serious suggestion aside even if I could get succeed and get away with it what would be the point? Do all that stealth at a place I still would only be able to look at the guns and not buy them? Like I said before fuck SHOT show.

Part of it could also be due to the polymer, even though it is a hard polymer, has more elasticity than steel or aluminum. That could also contribute to the bouncing forward rather than to the side. The geometry of it will likely need to be at a much different angle than the standard AR deflector. Angle would probably need to be brought back to the rear of the gun more. This is all in addition to your observation as well.

I was thinking the same. The brass deflector was only added on the original design because of the odd round being a little hot and hitting the shooter. Possibly the system is a little over gassed as well given how quickly the spent cases are rotating out of the bolt. Cool design though. Looking forward to updates.

@@ricashbringer9866 True, but if he got rid of it completely then he would have to resort to making a cut in the upper to make that wall thinner, which would create a weak spot, which he wouldn't want. Having the deflector doesn't hurt and in this case I believe it only benefits the design in terms of strength.

@@rekerboi1125 yeah he literally addressed that in the video.

@@lucasblanchard47 remember that the original AR didn't have a brass deflector. As already stated the thicker upper could be the problem, or even the elasticity. Another issue is the speed of the extraction. Your metal bolt carrier may drag on the upper. The buffer spring strength may be an issue. The buffer weight may be an issue. When you change materials in a kinetic system you may get imbalance problems. An interesting thought is that the gases dumped into the upper may be stretching the upper. Even more extreme would be upper is flexing. Your design an build is amazing. Is it possible to use big U clips instead of hose clamps?

It can also be done on a metal lathe with a boring bar. Just set your compound to the desired angle.

​@@tennessee.tiger1988 Not an internal diameter taper, but an internal taper of density inside the material itself. You could do an internal diameter taper on this handguard and probably get the same or similar effect (I don't really know how stiffness would be affected) But on more complicated geometry with different requirements I'd expect you might find benefits from internal density tapering where just tapering the thickness of walls is less feasible.

Would have been cool if I read the comments before commenting this exact thing myself lol

After that try using an adjustable gas key or adjustable gas block to fine tune it the rest of the way

Definitely got to get Chairman on this.

@@HoffmanTactical just don’t let 🧑🏿‍🦲…….. people see this video Chicago is bad enough 😂😂😂😂

@@This-account-is-hacked No worse than the purge kaw

@@This-account-is-hacked bro shut up. 2nd amendment isn't about race. Let me guess your a Democrat

@@subixbarbarasson6052 grrrrrrrrrrrrrr!!!!! Grrrrrrrrrrrrr!!!!🧑🏿‍🦲ers man they are bad

not rly but still cool

It's just a housing for commercially produced gun parts (like almost all of those so called 3d printed guns). You could make it out of wood, if you're patient enough.

@@PuerRidcully You can build your own aluminum receivers too

@@PuerRidcully you can carve an entire ar15 out of a 4 foot block of steel with a rat tail file if your patient enough

@@hockeymaskbob2942 I’m not doing that lol.

This!

I bought a Glock because Lucas said it was the only handgun he trusts his life to right out of the box!

I was thinking the same thing

@@z50com that’s some cuuuuucky sounding shit. He’s a cosplayer that mag dumps close targets basically. Ask yourself, if he is exceptional, why is he winning titles in competition and shooting for a pay check on a factory team?

@@TheAsheybabe89 how much money do you think he's really going to make as a pro shooter? I guarantee you he makes way more as a very successful business owner.

@@andrewdaniels7076 that is a valid point and probably is a good part of why he doesn’t try. On the other hand, I still maintain that he’d frequently get smoked at anything approaching a state level match by full time pros and extremely devout amateurs. Don’t get me wrong, he’s definitely talented. He just isn’t the gun Jedi a lot of these kids (who largely seem to originate in airsoft or video game circles)seem to think.

^This

Ejection looks like a geometry issue with the brass deflector and or the extractor on that one BCG. IMO

@@spaz13b seems like the deflector is angled too far forward.

I’m sure he could get the deflection figured out, he’s working alone. If he had a few employees I bet he could sell thousands of these.

@@wood-wheel-wizard I volunteer as tribute!

It actually looks beautiful!

Yes, it would be nice.

The problem with plastic recivers: flex & heat. Flex cause problem with heavier optics on plastic rail and accuracy because the reciver have to be a tight & strong fit to the barrel for accuracy (iirc, guy ran over his ar with a truck, the reciver thread cracks, barrel is loose, accuracy decrease significantly. So it this case plastic flex produce same effect). Heat, as stated in video, weakens the reciver causing more flex. The only historically proven plastic gun (vhs 2 have metallic rail mount on steel post which is directly mounted to barrel) is the g36 which is now replaced by the 416. The g36 have larger diameter trunnion or barrel nut at 35mm (vs ar 25mm trunnion) to reduce the heat transfer to reciver, and have 60mm long contact to reciver; therefore much more rigid than an ar normally is. The 3d printed dno dx7 failed after 370 shot, be cause the guide rail got loose, do have a larger and longer ak trunnion. Its unecessary that ppl still want to 3d print ar uppers, when in fact, the aluminum ar upper is just basically drilled hole with a slot cut for the charge handle, any milling machine would have no problem making the inner surface which the carrier contact, the barrel can just be drilled and pinned like an ak (proven by lmt upper which use screw but close enough). See the simple ar10 prototype thats basically some tube smg thing. The original armalite papers state that any screw cutting lathe can be used to make the ar bolt carrier & bolt. Ease of manufacture is built into the ar from the very beginning.

@@cgdg7075 Did you mean to reply to the video or my comment? While you arent wrong I dont see what it has to do with my comment.

@@travismarshall4878 hah i read your comment then his after and was like wtf . But yes to what u said ..its all absolute. The thickness is a bit much but id say filet it further around the ejection port/ non existing dust cover area.. and if we could have a different angle on that deflector which i have already easily resolved in my head after viewing the slow motion bounce backs i think explaining it is much easier on mushrooms but yea .. Hmu 🤙 i do caddy for you golfers out thar

God bless you

I think you’re right, I think if he laid down the back edge of that ejection port to follow the same plane as the brass deflector, to almost a knife edge (maybe like a 2 or 3mm edge thickness) he might get better results

I was thinking the exact same thing. It's to thick by the brass deflector. Carrying the angle all the way into the ejection port would probably help, even just a little.

I agree, it appears to allow the back of the casing to get kind of corralled into the arc at the back of the opening before it even gets to the deflector.

Might have to try both.

@@HoffmanTactical switching to a mid length gas system might also help.

@@HoffmanTactical we don’t want to let the 🧑🏿‍🦲‘s see this video city’s like LA and Chicago and St. Louis and Memphis are bad enough lol 😂 if they see this they will start making them and that’s why ghost guns got banned is because of gangs really they aren’t afraid of black guns 😂 it’s the people that are black with them they are afraid of . The numbers and statistics for jail don’t lie this isn’t racism it’s just facts

@@paintzemute6364 Yes, try a mid-length gas system, and potentially a heavier buffer weight. It looks like your ejection issues might be due to the bolt cycling too quickly (the cases are barely into the ejection port before the bolt is going forward again). You can slow down the cycle rate by imparting less gas on the BCG (adjustable gas system, or mid-length and rifle-length systems), and well as increasing the reciprocating mass (heavier H1 and H2 buffers). This would allow the ejector more time to kick the casing out before going forward again.

Slick side would go amazing with those slick aesthetics

That's because I was talking better. Not always possible.

How bout heat sinks all around the and then over it with a skeletonized shroud, or mlok

Interesting. I've had issues with the Taulman Nylons becoming too flexible after water absorption. The Polymaker PA12 is looking promising. Annealing some now.

@@HoffmanTactical Yeah PA6 prints do tend to become rather floppy after soaking up humidity. The Cast Plate stuff behaves a little better than their other offerings once annealed but not nearly as stable as a CF or GF filled nylon. I have some issues with Polymaker, specifically their Polymax PC. From the way it prints and the mechanical properties it exhibits, it's nothing like a pure Lexan PC resin. Behaves more like a PC/PBT blend. Much easier to print, but also lacking the strength and thermal stability. Either way, I'm glad I stumbled upon this channel. I think you're doing some really cool stuff with 3DP tech and I can't wait to see what you do next.

This.

I was thinking the same, but also the angle of the plastic will be a bit too thin at the front so maybe need use a nylon part there to hold up. Not sure if you can glue a nylon part to the PLA part, so maybe a clip. For the front of the port, a similar shallow angle divet may help with cycling the bolt as it closes and air is pushed away. Maybe an inserted nylon part on the exhaust holes above the barrel would be possible and a screw on upper and under barrel rail?

@@KernsJW I agree that the point would be thin, but I think that the shells would never hit the point-- at least not too often. I think next time he's going to print the entire thing in nylon. IDK if you can print with it, but there is a higher temp nylon called pa6.

@@HoffmanTactical There's a higher temp nylon called PA6 or nylon 6 or pa66.. I'm not sure if it's available for printing-- but it's much more resistant to higher temps.. Other than that I literally don't know what I'm talking about lol.. I just know that the higher temp glass filled nylon is used in a lot of power tools like drills and impacts, etc.. But those are injection molded clam shells-- so maybe it's not even available for 3D printing-- I'm not sure.

"could" be, "one day" 🤔 ... No, I think you know better ;). Just a friendly having a little laugh (it's coming ... and soon ... 🤜🤛 🤝). Find the others.

sounds like star wars

@@cd0130 it’s time.

RGB water-cooler on your AR. In all seriousness, I think the solution to the heat problem for ARs is going to be an improvised or simple to make metal trunnion with heat guards to protect the plastic.

Honestly had the same idea a little while ago but the idea of designing or moding an ar to have hollow tubes through out its upper frame for water to run through gives me CAD ptsd. In the end I realized I can cool the whole gun at once by putting it in a bucket of water. As a forgotten weapons meme its a 10 out 10 of an idea!

Someone is working on a scorpion hand guard with pc fans lol

some old mg’s from ww1 had water cooled barrels , notably the british Vickers, so def not a new idea

Thought the same! I do wish it had MLOK or some handrails but it’s very clean & polished aesthetic !

Anything that needs to be registered with the feds....

What are you talking about?you don’t 3d print every component, you have to use metal it a f!cking gun

@@Mithradates_of_Los_Angeles So you would agree then, he didn’t 3D print an AR-15 like as title states

Sooo basically you clicked on this video believing that one could make an entire rifle out of plastic.

@@alstonthomas6013 you can.