PS90/P90 Full Auto Trigger Group, and how it works. 

Aside from 1 or 2 idiot trolls who want to appear smart, the feedback has been mostly positive.

Hangassan that is just a matter of removing material from the safety selector so that it can move to the 3rd position. the video isn't a tutorial on conversions, but rather an academic explanation of how the pack itself functions.

Understood...the design is elegantly simple in design...wish I had a SOT 7 license...or the Hughes amendment would get repealed...

@wrenchmonkeu , so if we get our 07/02 & we convert a ps90 to Full auto . We SN the trigger pack ? & god forbid I don’t want to continue with 02 & I don’t sell it . Uncle Sam only takes trigger pack , not whole gun?

If we just modify the trigger pack to ps90 to convert to FA , do we have to pay ITAR fees !?

I appreciate your video and information. Let me state clearly, I'm 100% capitalist! I've came across a few ps90s recently with various sn's from 43xxx to 103xxx. I'm trying to obtain the desired trigger pack for resale value years later, no other reason than its worth a lot more and during a rush, you can charge premium. With that said, what serial number would be an expected cut off? I've found forums with this info but cannot see the old pictures so I'm not sure how to tell which is which. There also is a debate on colors in said packs. Any info that would help narrow down my search?

what do you think about the AUG hammer inside of this trigger pack ? think it'll work ? forums seem to indicate that but everyone is subtle how they talk so im not sure lol

@@cornpopthebaddude3992 Never tried it myself, but I have heard similar claims of comparability.

I thought the Gen 4 trigger pack was just a myth. Don't they still ship PS90's with gen 3 triggers?

@@SpicyCactus No idea to be honest. Was just sharing the information that was being reported at the time. I haven't bought a PS90 in the past decade.

Unfortunately, it's not true of many things at all anymore, including firearms. You can't even remodel your own home without approval and paying for a "permit" anymore. If you don't pay the government an annual rent on your property, they'll take all of your property from you, and potentially put you in a cage. Liberty is dead. :(

Wrenchmonkey​ Yes it is. No such thing as a free man. We are more free than most, but there is much to be done.

Wrenchmonkey that's why I say just convert it anyways and keep it a secret. live free or die

@@irenemoran6137 Unfortunately, the tyranny of the majority has decided to kill liberty.

I love guns and all... but would you agree with that for cars? Someone who's drive drunk time and time again, can just do what they want with it until they kill your kid? Or urianium? Well I bought it, so I can do what I want with it..... not gonna wanna live in a country like that. If mass shooters were capable of easily sourcing FA guns... we'd likely not have many gun rights at all. This does, in essence, protect us in a sense. But it's a line we have to hold, and realize that some necessary compromises in freedoms are just a reality of life.

2 year old answer: According to ATF definitions, only the offending modified parts would need to be destroyed; in this case, the modified sear (added material). Everything else is not a "machine gun" by definition, only the part that enables full auto fire. Even a modified safety selector (allowing you to pull the trigger farther back by switching to the third (full auto) position) and modified hammer wouldn't qualify because they are not what makes it full auto.

The FCG parts in question are all polymer parts. I agree with you, full auto is really more of a novelty than anything. This thing will dumb 50 rounds in about 3.5 seconds. Fun to do once or twice, but ammo can be hard to find, and runs $35-$40 a box when you can find it, so the novelty starts wearing off pretty quickly at those prices.

@@Wrenchmonkey1 awesome! Thank you for the reply and the great information. Your vids are awesome. Must of been hard to cut that barrel haha. I was cringing. But it was totally worth it. I bought the reloading dies equipment for the 5.7 x 28 a while back when I bought the FN57. Just have to make sure you don't remove the lacquer coating or it won't cycle in the ps90 or the FN Five Seven. I live in Canada so getting ammo is really hard to find and when you do find it, it's really expensive. Thanks again for the knowledge!

The differences between the trigger group for the P90 and the PS90 is hammer and the disconnector, as described in the video.

buellfuel2001 It is a safety. Basically a drop safety.

Thanks for the answer...but how does it work?

buellfuel2001 To be perfectly honest, I'm not 100% certain. I've never given it a second glance. I believe it works by having a large enough mass that if the gun drops and hits the ground, the inertia causes it to fall and block the primary sear from moving backward and releasing the hammer, but again, I've never really looked at it closely enough to be able to give an honest answer. If I had designed the gun, it would always be in the "block" mode, and actuating the trigger would cause it to move out of the way. But I didn't design it, and I'm pretty well certain that it doesn't have any linkages connecting to it, so I'm pretty sure that it just relies on mass and inertia.

A 4 year old answer lol: It IS a drop safety, in case the weapon is dropped onto it's muzzle. If you were to do so with a round loaded, the weight of the drop safety causes it to move forwards (through inertia) and block the sear from dropping the hammer. If you were to drop it on the stock, the weight of the bolt may just eject a round and load another, but the hammer would remain locked into the sear.

+xkguy If your trigger group has all of the parts mentioned, it will work. Don't do it if you don't have the proper licensing, unless you want to spent 10 years in Federal prison.

@@RodneyStansbury-i2p Nope. That does not give you selective fire.

No. The sear still works. Only when the trigger is pulled back all the way does the sear rotate out of the way. When it's released, it moves back. This is the way the OEM P90 trigger pack functions. This works exactly like it would if it was a factory-built P90.

Mostly. You'd have to also either replace or modify the factory safety selector to allow the trigger to move the sear all the way back into the 'full auto' position, but it's effectively a 'drop in' conversion beyond that.

The trigger group and the fire selector (safety) switch are the only differences in that regard. The other difference is the barrel.

7 year old answer: No. The hammer would reset to the same position every time, so long as the groove in the hammer itself is forward enough (as in the video). If you have the stock groove, then then hammer would never reset fully and would follow the bolt forward, firing only one round (due to the trigger moving farther backward and releasing without the auto sear being tripped by the bolt)

Yeah, it gets pretty spendy to do often. But it's an experience that is worth taking at least once, if you get the opportunity.

It would not be pricey if it was not regulated.They want to price guns out of our hands.CNN should have to have a permit to spread their bs.Regulate all ammendments or is it just for one,the 2nd?

@@allywilkeforsenate I believe they are talking about just the sheer cost of the 5.7 round. It’s almost around $1.75 (starting) a round for the good stuff.

You can never buy one as an individual. If you had a standard 01 (dealer) FFL, and an SOT, you could buy one as a "dealer sample", provided you could find a police department willing to request a demonstration of that specific rifle, on official department letterhead, or without a letter of you were fortunate enough to find an FFL with one in their inventory, who was going out of business and surrendering their own FFL and SOT. Short answer, go to a range with NFA rentals and rent one. You can still waste a whole of ammo, with FAR less paperwork and Uncle Sam's fingers up your ass...

@@Wrenchmonkey1 thanks for the info

P.C. FIVEZ This is the way that retains the full original function of the trigger pack which allows semi and full auto functionality. It can also be done by adding a small disk to the sear pin, which is how I would do it now that I have a CNC mill to be able to do that.

small disk to the sear pin? i never heard of that hack before. instead of using a CNC why dont you just find a small washer of some sort and place that on the sear pin?

rio nt I am interested, I have a gen 3

You can ask questions here. I'll do my best to respond quickly.

@@Wrenchmonkey1 I am a part of a special unit and I have been granted permission to convert my ps90 into a p90, with 10.4 barrel and auto fcg, for duty. I dont see FN working with me and getting me a whole pack, so I was trying to piece together the rest to convert it to select fire. Would I need 3 way selector, the extended travel 3 way trigger, and then just modify or replace the sear/disconnect with an auto one? And does anyone print these in aluminum anymore? I can give letter head or credentials if needed . I wanted to replace the internals with aluminum ones if anyone can print them in the auto config but Id take a printed plastic one if you have a link.

Oh. I'm sorry, I can't in good conscience aid and abet costumed thugs who terrorize their communities and kill people without consequence. Good luck finding an honorable career instead.

@@Wrenchmonkey1 Id say a Special Response Team geared at training and responding to School Shooter/ Active Killers IS a pretty honorable career choice. It’s too bad youve had less than positive experiences in the past, but Id still really appreciate the help. Best regards🤝

Don't take it personally. I'm sure that aside from your chosen career as a boot on the neck of your fellow man, and the extortion and terrorism you willingly and gleefully engage in for a paycheck, you're otherwise a fairly decent guy. Maybe you're among the slightly-over-half who don't even beat the shit out of your own wives. A Scooby snack for you, if you are! And I'm sure that some of the things you do in costume are not inherently evil; good, even. Hell, even y'all's patron saint made the trains run on time. Nevertheless the evil still outweighs the good. Until the alleged 'good apples' do something about the ones they claim are 'only a few bad apples', none can ever be trusted. Haven't seen any of those 'good apples' step up yet, and I'm not gonna hold my breath. I'm not going to assist costumed thugs in gearing up for war against the rest of us. You guys chose to view and treat us as 'the enemy'. So be it. I will not empower those who see me and my fellow peasantry as your 'enemy' and believe yourselves to be 'at war' with everyone besides your own gang. This is the reality you guys demanded and created. The rest of us are just livin' in it. But, hey, if I ever need somebody to shoot my pets; or throw a grenade in my sleeping infant's crib and laugh about burning his face off; or cower in the parking lot; or shoot me in the back 17 times and then 'lose' the bodycam footage, investigate yourselves, and miraculously find not an ounce of 'wrongdoing' on your part, I'll be sure to give you and your boys a ring. 👍

An 07 FFL and an 03 SOT.

Yes. With one modification. The safety selector would have to be changed or modified as well.

@@Wrenchmonkey1 do you have a video for how to do that part?

@@leifjensen4314 I don't, sorry. Do you have a registered trigger pack?

@@Wrenchmonkey1 I’ve sourced one but it was sold out

Absolutely. Cops are not the good guys!

You absolutely may NOT. Not if you're in the U.S. The only way you can legally build a full auto in the U.S. is if you are an SOT-paying FFL Manufacturer of firearms.

thx!

If only and only if that was true 😬

A ton of paperwork, and $500/year.

@@Wrenchmonkey1 is it worth it I have no problem doing the paperwork or the $500 a year You should help walk me through it legally I would love it the ps90 is my favorite

@@Elite5.7 That's up to each person to decide for themselves, if you want to put in the effort to make a side business of it. Since having kids, I can't really say it's been worth the time or effort for me to keep doing it, but in for a penny, in for a pound. If you've got lots of spare time, and it's where your passion lies, you'll probably get some enjoyment out of it. But at the same time, things you enjoy doing stop being as much fun when it becomes a job. For $500/year can buy you a decent amount of trigger time at a rental range, so that might be a better route to take. Especially since you can get some variety in what you shoot that way as well.

@@Wrenchmonkey1hey ! So if I get a 07/ then sot 02 , I can convert my semi ps90 to a FA without paying a ITAR fee ? Same goes for a AK or AR or other hands if I add a piece to make it FA will it fall under the 02 & not the itar? I ask because itar fee is expensive for me I can do 500 a year but not itar

@@Ranchopistolas333. I'm not a lawyer. You would want to consult an attorney for legal advice, but my understanding is that ITAR is NOT required for manufacturers who do not export.

Well how much is life insurance that teally works?500 bucks a year for class 3 and it defeats tyrants body armor.

Ally, Promoted Pawn sells trigger upgrades. I have "Stage One" in a little block I've inserted that does improve the pull crispness and let-off. Next Ill get the DELTA upgrade. With this I will be able t increase my semi-auto rate of fire a bit, enough to make it very lethal in a "spray-and-pray" situation. Plus, I'm keeping my BATFE long barrel for the better velocity which equals better penetration with the higher ft. lbs. of energy.

+Carlos jose OK?

Neat

It's designed for nato with weight and cost in mind. There you go.

I CNC'd a 6061 aluminum fire control unit for my FNP45 the difference in weight is about .95 grams and I've yet to break it or stress any of the pin holes that I thought I would need to make out of S.S. it wouldn't cost much to manufacture however it's more profitable to have them break and sell replacement units, that said; I wouldn't want anyone protecting me much less the nation carrying a tool that will break on them when they need it to save someone's life including my own.

That's strange. I've had no problems with the trigger group in this weapon, even after the mods. I think the reason for using polymer is for both weight and cost savings. Although, cost savings certainly isn't being reflected in how much they're charging for the end product. They're maximizing their profits, that's for sure. They sell 'em to government organizations and law enforcement types for about half what they sell them to 'peasants' for. They're like H&K. They HATE the civilian market.

Why do they hate the civilian market? Because we actually care about quality and service?

It is for spies to pass through Xray machines.

Yes, was a conversion of a PS90 trigger pack that was converted to a P90 trigger pack. I no longer have it, because I let my FFL lapse. Fortunately, I had registered the trigger pack instead of registering the rifle itself, so I only had to get rid of the pack.

2A should be all you need, but the US Constitution is no longer respected by the feds or cops. No more rights, only privileges you can purchase back from The Crown through licenses and permits. ;) The trigger group is very similar between the AUG and P(S)90. I believe some parts are even interchangeable. But I don't have an AUG, so I can't speak directly to that.

@Wrenchmonkey if it please the crown, may I purchase some freedom? Haha yea. I have an Aug but not no p90

Yikes. I'm not sure what type of job that would be, but if it doesn't pay well enough to be able to get your own F/A, I'd probably start looking for another line of work! Stay safe!

@@Wrenchmonkey1 I am to old to run and to old for hand to hand.I am also to old to change jobs.2a was not intended for politicians to dictate to people what they can use to defend themselves.

@@allywilkeforsenate I agree with you. The 2nd Amendment needs no justification. Stay safe!

@@MrJedi5150 Civil war is coming fed boy .Fvckers like you do not get to tell me what I need to defend myself from government tyrants such as yourself.

Yes there are other ways that you can make it work, but you don't get true functionality of the trigger pack. A properly functioning P90 trigger pack doesn't just go full-auto on you every time you pull the trigger. It works in both semi, AND full auto. Yes, you can make it straight full auto, but I wanted it to function the way it's supposed to, and it does. Some people might think that means I don't know what I'm doing. I think the vast majority of qualified people would agree with me, however, that restoring it to the factory functionality is the correct way to do it, vs just removing parts and making it go full auto. But everybody is entitled to their opinions, including yourself. Feel free to share what it is about you that makes you feel that you're more qualified to do this mod than myself. Feel free to share your own video of how YOU, as a qualified individual, did this mod. Thanks for watching and commenting!

uraijit You did not mention the one other part needing modification/replacing to make it fully select fire. Even with that trigger pack installed, it still won't make a *stock* PS90 fire in full auto. I'm not saying you don't know what you are doing, just that you left that important bit out. ;-)

Element of Kindness The purpose of this video is not to teach people how to make their PS90 full-auto, it's to show how the trigger group works, and how *I* modified mine to restore proper function for my registered post-ban dealer sample. There is one small modification needed to the safety selector, to get the rifle to fire full auto, but that has nothing to do with how the P90 trigger group functions. If I were to do a tutorial intended to show others who to modify their own rifles, it would go into much more depth on how to do the mods, and the safety selector mods would be included. But I don't see it as a prudent thing to do to teach people explicitly how to do it, since most people don't have the proper licensing to do so legally. The people who do have the licensing can (and regularly do) contact me directly for help. Thanks for watching, and commenting.

+Element of Kindness You're a brony... door is that way. --->

ImpyLane Bite me Impy