Drop In Auto Sear RDIAS - How They Work - Machine Gun Mike

hey guys a while back i had put up some videos of me shooting my ar 15s in full auto uh and i was explaining in the descriptions that i was doing that because i own a registered drop in autoseer and ever since i put up that video i've just been getting a lot of private messages and emails and stuff like that of people just kind of wondering you know is it legal how do you get a registered drop in auto c or what is a register drop in auto seer you know just a lot of the same questions um so i basically wanted to put this video together to just kind of answer some of those questions so number one is it legal yes it is legal um you know you do have to get a registered drop in autoseer but it is legal um number two you know what is it well this is it this is exactly what they look like i use this ruler to spin it so this is uh the side part this right here is basically the trip that the bolt carrier hits let me spin it around to the other side for you there you go and that is what it looks like it's a very small as you can see compared to this ruler it's a very small little piece of metal that um costs a whole lot of money because of the 1986 machine gun ban another question that a lot of you have had is how do you get one and you know what do they cost um well because of that 1986 machine gun ban they are very uh you know they're they're very rare um basically the 1986 machine gun ban if you don't know before 1986 it was 100 legal um to form one basically make a registered machine gun or basically just buy a registered machine gun brand new ones and everything it was just a normal 200 tax well in 1986 basically that was that was stopped so basically you know the government cannot come and just confiscate things from people so you know they did ban machine guns however all of the ones that were already on the registry which i think there's like a hundred thousand of them or something um are still 100 legal to own um so basically the problem with that is that you know there's a lot of gun owners out there there's a lot of gun owners out there that own a lot of guns and they would like to have a lot of you know machine guns you know and there's nothing wrong with that they're a lot of fun there's you know the criminals and stuff they're not the they're not the collectors they were the ones never registering them in the first place you know so anyways um so the problem is that there's a very limited amount out there for the very high demand and especially when it comes to these sears you know the ar-15 m16 rifle is the most popular rifle in america and pretty much probably half of every single person that owns an ar-15 would love for their ar-15 to be full auto so because of that and the fact that you know i don't really know any real numbers but i think there's like a thousand of these in the registry or something maybe even less um you know because of the the very small number of them you know you start off with something that did cost 50 bucks in the 80s and now as stupid as it sounds you know they they sell for anywhere from 15 000 to 25 000 depending on if it's an aluminum body or a steel body unit you know and when you hear that at first it's like well that just doesn't make any sense you know i could just make that in my garage and you know while that is true yeah i mean most people probably could do that and criminals do do that um if you want to stay within the law and not go to jail if you ever get caught with this thing you have to get a pre-1986 registered one so the basically i like to tell people is it's a fifty dollar piece uh basically a fifty dollar piece of metal um with a you know a 20 000 piece of paper telling you that it's legal to own um doesn't make much sense but you know it is what it is the laws were passed 30 years ago and i mean honestly with the current political situation uh they're definitely never going to get repealed i really don't think that so um you know another way to look at it is that because they are um you know very rare like this and are already you know around twenty thousand dollars a piece um just imagine that they went from fifty dollars to twenty thousand in thirty years you know how much will it be worth in another 30 years you know and in that respect they're actually extremely good investments um of course you know it's only an investment if you actually sell it but really i mean you could buy something like this save up your pennies buy something like this now for i don't know let's say you get a screaming deal at fifteen thousand dollars and then just shoot the crap out of it for 40 years and then turn around and sell it for you know who knows what two hundred thousand dollars a million dollars you really don't know um you know when it comes to uh hobbies it's pretty hard to beat um a hobby like machine guns you know where you can actually enjoy the hobby and make money at the same time so anyways so number one to get one you obviously have to have the cash for it and number two because it is rare you do have to find one uh sub guns and sturm gevir and you know there's a couple just online sources and online auction sites and stuff you will see them pop up for sale but just know that when they do pop up for sale you are definitely not the only person looking to buy it i went ahead and took it apart for you just so you could kind of see the parts of it so this right here is the seer body itself that's actually the part that has a serial number on it my serial number is located on the underside and that is the part that technically is registered if that breaks you're pretty much you're pretty much sol right here the next thing this is the spring that basically pushes this trip out and then here's the pin that obviously goes through the trip and goes through the body of the sear this trip if you know you know if you look at the internals of a real m16 this trip is basically the equivalent of the standard gi auto sear and this pin is basically the equivalent of the standard uh gi auto sear pin and then this these holes are basically this little rear section basically takes the place of the rear section of an m16 receiver now obviously this is quite different it sits inside of the receiver but the basic principles of it it kind of works exactly the same i just put it back together because i did want to explain one other thing before i show you how it works um all right so while i was saying that you know if you break this body especially you know across the serial number or something you're pretty much screwed everything else you can actually replace if your spring wears out you can replace that if the little pin wears out you can replace that if your trip wears out which really the whole register drop in auto sear really has almost no stresses on it the only thing that really has any type of wear really is the trip because the bolt is rubbing on the top and then the hammer notches then you know rubbing on the bottom so this part can wear out but you can replace it so it's really not that bad and they do last a really long time my whole unit is made out of steel so obviously you know my trip is also made out of steel and you can see i have about 10 000 rounds on it and you can see the top is not quite completely flat anymore it is kind of getting a little bit of metal rubbed off on it but you know that's 10 000 rounds and i can you know be straight up with you and tell you that it still works perfectly um so they do last a really long time i'm you know and that's just one of the several reasons why these register drop in auto series are so popular and so expensive another thing you know is that you know if you have this in the back of an ar-15 running full auto you have some bad ammo or you get a squib or something and your whole just machine gun blows up um you know your receiver is gone so if you had a registered receiver m16 i mean you'd pretty much be screwed but if that happened with this this would be sitting in the bottom or in the in the back of the receiver and more than likely it wouldn't be damaged at all um so you know just kind of knowing stuff like that it just kind of gives you a peace of mind over you know such an you know such an expensive investment so how this thing works basically um to turn an ar-15 select fire you do need to have a legal register drop in autosteer first and then you need to have an m16 fire control group and then you do need to have an m16 bolt carrier so basically one of the big differences is the m16 hammer a normal ar-15 hammer does not have this extra lip here this is a standard m16 hammer and you can see it does have this extra lip so whenever you have it in semi-auto and you pull the trigger by the time the bolt goes back to the barrel you know your finger is still on there because it happens so quick so you release your finger off the trigger and the disconnector basically will grab this notch right here and all that's fine whenever you put it into full auto the little cam on the selector lever pulls the disconnector out of the way so it can't ever grab this so basically then it relies on this grabbing either a standard gi auto sear and an m16 or with a register drop in auto seer it grabs this so basically if you're holding your finger down um in the split second that you know you pull the trigger the bullet flies out the hammer goes forward then the bolt carrier pushes the hammer back down the hammer is then caught by this because there's no disconnector to catch the hammer well then right after that happens this bolt carrier right here you can see it's got this little lip right there at the very end of it and as it's in okay so it starts off being far back like this and then as it grabs a new round chambers the new round and then right at the very end this hits right there and of course of course it doesn't look that crappy but that the body itself does stay still inside of the receiver um but anyways this hits that little lip and what that does is it basically goes like that you can see when it goes like that obviously if that bottom part was holding the hammer when it goes like that it will release the hammer at just the right time the hammer swings forward fires the new round and then it all happens over and over and over again until you take your finger off the trigger you know it really is really cool the guy who invented this uh back in the 70s 80s whatever whoever invented it was really a genius um you know just to be able to make something so simple that just you know you just drop it in the back of a receiver and there you go you have you know you do that and then fire control group the bolt carrier and there you go you have a machine gun it's really neat so anyways that's basically the basic uh working principles of how a register drop in auto sear works with my little my little ghetto set up with a ruler and pieces of paper in the background so one of the last things that i did want to show you is basically how this seer fits inside of an ar15 receiver so here is an ar15 receiver i have set up um here is the m16 trigger now this trigger is not a normal just gi m16 trigger it's a diesel super select fire trigger it's actually a really good trigger i'd i definitely recommend it if you have an m16 or a register drop in auto here so you can see that's different my ar-15 receiver does have a low shelf in it and you can see my selector lever uh the cam and everything in it is definitely quite a bit different so basically uh in this opening you pretty much take your register drop in auto see here i put mine in like that front first and then push down the back and there you go that's it it's held in real snug no wobble movement nothing and that's pretty much it and now you have safe semi and then get ready for it full auto so that's pretty much it all right so now i've got the register drop in autos here in the rear of the receiver i've got an m16 selector lever m16 fire control group and an m16 bolt carrier all in there let's now i'm going to basically show you how they work so first i caulk it it is unloaded by the way i have checked so [ __ ] it and put it on safe obviously nothing happens you put it on semi-auto and it fires now if there was a round in there while my finger is still being held down the bolt carrier would have went back went back forward and the disconnector is now holding the hammer back so when i take my finger off the trigger then it releases it ready for another shot so now when i put it to full auto i pulled the trigger it is single stage now before it was double stage so i pulled the trigger and i'm still holding it back so now the gases blow the bolt carrier back as it moves forward just listen for it it'll be a loud click at the end you hear that what that loud click basically is is the register drop in autos here is holding the hammer back and then right at the very end that lip on the bolt carrier hits the sear trip and it releases the hammer and that loud click you hear is the hammer then striking the firing pin so we can do it again you can just hear it [Music] it'll basically do that over and over again until you take your finger off the trigger and that's it all right guys well that's the end of my video i hope that i was able to answer some questions that some of you all might have had about register drop in auto sears if you have any other questions or comments or anything you know please feel free to you know write a comment under this video or email me or private message me or anything you know and i'd be happy to answer whatever questions you all might have anyways well stay tuned i will be uh trying to make some more videos and stuff of me actually shooting my machine guns and stuff like that so hopefully you all be enjoying those in the near future and besides that have a great day and thanks for watching

Channel: NFA Education

Views: 109,878

Rating: 4.8999457 out of 5

Keywords: #RDIAS, #Full Auto, #Machine Gun, #AR-15, #AR-10, #M16

Id: 18-vjBrKhhg

Length: 14min 55sec (895 seconds)

Published: Wed Jul 29 2020