Saw this while visiting their booth. They are dubbing it the BFS (Binary Firing System). It's currently awaiting BATFE approval. The concept sounds interesting. In the third position, it fires a round when the trigger is pulled, then another when it is released forward to reset. No claimed cyclic rates or anything, and that's all the details I have right now.



What say ye?

Update 12/27/2015:

BFS FAQ and technical summary:


Will the BFS work with 9mm uppers?

Yes, though given the amount of mass in the bolt and buffer some tuning to the rifle may be required. But it has been done by at least 1 Arfcommer in this thread.


Will the BFS work with my .22 kit/upper?

Yes, but it requires permanent modification to your .22 bolt, as it's factory configuration cocks the hammer too far, and actuates the backup disconnector.


Why does the rifle need tuning, doesn't the trigger work? Should I wait for bugs to be worked out?

There are no bugs in the trigger. The trigger works exactly as advertised. However, because it operates independently of the bolt carrier, your finger and outrun your gun. Our testing so far has shown that a total reciprocating mass of approximately 11 oz allows the rifle to operate at a cyclic rate high enough to prevent out running the gun. Franklin Armory has also suggested opening the gas port as an alternative to using lightweight carriers or buffers.


If lighter is better, why not take all the weights out of the buffer?

Reducing buffer weight to the extreme allows the bolt carrier to bounce too far when going into battery, resulting in light strikes.




What is a backup disconnector? How does it work? Why can't I "ride the reset" and get this thing to work?

Watch this for an explanation

There are 2 types of malfunctions that can occur when using the trigger. Inadvertent actuation of the backup disconnector is one. That is also the easiest to prevent. You simply need to make sure that on the pull stroke, you pull the trigger past the point of releasing the hammer, and take up all of the over travel. This moves the backup disconnector out of the path of the hammer. The second malfunction is a light primer strike, caused by hammer follow or bolt bounce. This occurs when your rifle is not capable of the same cyclic rate as your finger, or because your carrier bounces too far when going into battery. To speed up your rifle, you have 3 options: enlarge your gas port, reduce the mass of the system with lightweight components, or use a heavier buffer spring, or a combination of all three. Currently it appears 11 oz total mass for BCG and buffer works well with a normal gas configuration.




What about the possibility of a 0-45-90 selector?
Given the amount of material being removed to house multiple disconnectors, FA has stated this is not possible to do.

What lowers will this fit?

The trigger housing is machined to a maximum material condition meaning that slight variations in the lower on the small side will cause issues with fit. There are a wild variety of lowers this trigger drops right into, and some it does not, some even from the same manufacturer. I think to say "because it fit mine it will fit yours" is foolhardy. Generally, a minor amount of material removal from either the FCG pocket of your lower or the trigger housing is all that will be required to get fitment. In some cases, shimming of the trigger housing in a loose fitting lower is recommended by FA. The trigger housing is 0.681-0.682 wide. Most lowers have 0.685 wide pockets, however a slight taper to the pocket can cause binding.

What do you need to help prevent hammer follow ?

In most cases, running a lightweight carrier with carbine buffer and a SpringCo Red or Orange extra power buffer spring will give you a pretty reliable setup. Most have seen great success with this combination.

Videos posted from ARFCOMMERS using the BFS:

http://youtu.be/1hKUZBd8npo

https://www.youtube.com/watch?v=vMp3PC0diwI&feature=youtu.be

https://www.youtube.com/watch?v=m-XbcP6AbD0

https://www.youtube.com/watch?v=eP-bygySVlY

http://vid788.photobucket.com/albums/yy166/jimmys120/FC3EF678-A038-4E4F-AF48-FA3BBEEC31B7_zpsy35lxpie.mp4

https://www.youtube.com/watch?v=JQNUGR0QAdU

https://www.youtube.com/watch?v=ipiGtsZUxko

https://www.youtube.com/watch?v=TQV15-wmrBY

https://www.youtube.com/watch?v=HhffGuJ4iY8&feature=youtu.be

http://vid261.photobucket.com/albums/ii65/turtlesniper/Mobile%20Uploads/trim.EE85A5F2-4244-4FC1-837D-4D39EE0BD5E3.mp4

http://vid261.photobucket.com/albums/ii65/turtlesniper/Mobile%20Uploads/trim.3D404ABB-7ABA-4AAA-964E-0BD9C72F0BD0.mp4

http://vid261.photobucket.com/albums/ii65/turtlesniper/Mobile%20Uploads/trim.0DDDE443-FABB-4DB9-91F5-4CDA354790E8.mp4

https://www.youtube.com/watch?v=WcOciQ9IXvo&feature=youtu.be

https://www.youtube.com/watch?v=TFiD8I3JP_s

https://www.youtube.com/watch?v=Vu9-U9nVB9Q

https://www.youtube.com/watch?v=atUxkjoBS5Y

https://www.youtube.com/watch?v=UVJHVqgXRVI

https://youtu.be/h-9VoW7DEYg

https://youtu.be/Gftg8t3ltDw

https://youtu.be/530rFIAzqP4

https://youtu.be/ONmDCStbgqU

https://youtu.be/OAe1dqg1yeg

https://youtu.be/t9O5NAHCp7Y

http://vid261.photobucket.com/albums/ii65/turtlesniper/Mobile%20Uploads/trim.036F7133-0144-4260-BEDD-DF9748905425.mp4

https://www.youtube.com/watch?time_continue=1&v=3cBkbYdT3og

https://youtu.be/NaumdeRsQns

https://www.youtube.com/watch?v=emNr5PmagDc

BFS maintenance guide:

IF YOU HAVEN'T YET, GREASE THIS CAM FOLLOWER PIN

Not sure if it's been asked. But if one were to buy this trigger as an accessory. Does the selector come with the trigger, and does the trigger come with shims?

Yes the selector and shims will be with the trigger

I went about 10 pages back looking...

Has anybody seen or posted video to YouTube of a 9mm version running with a BFS yet?

Yeah I think it was a cmmg lower a few pages back. FA has the video on their Facebook page too. Seem to run well. I plan on putting one of the triggers in my 9mm qc10 build but I'm going to have to file the trigger housing in order to get it to fit in the billet lower. I will probably have to tune it to run faster

Nice. Thanks, GunSafe.

Anybody put this in a 308 lower yet??

I've been pretty impressed with how this guy unloads with the BFS
https://www.youtube.com/watch?v=Vu9-U9nVB9Q

Anyway, I think this trigger would be perfect in a classic commando build....so in addition to a lightweight carrier I have ordered the parts for a 10.5" pistol that will pretty much look like this:

I got back to the range today and tried to drop it in my Mega lower.  It would not fit.


I got some great video today, hope to get it edited and uploaded soon but have family stuff this evening.

What was the problem with the mega? I have not tried my mega maten lower yet.

There seems to be a shelf where the tail of the BFS housing needs to sit down in.  


Here's the .22 LR action from today:

It sounds like its not a full mag dump. I tried counting but it was to fast

Nice, you handled that like a boss! From my not so scientific math it looks like around 720rpm's. It runs good that's for sure. What setup are you running as far as spring, buffer, and carrier?

I'm gonna start off with a blue Sprinco spring, empty buffer, and a JP LMOS carrier. With an SLR adjustable block. Hoping it'll run pretty well.



Look at the mag it has a window. It was a full mag dump.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Do any of you guys that have this already own a Seekins billet lower to see if it fits?

Your video was awesome

I got my v seven Ti bcg today. I think I'm going to shoot for 11.0 oz with the buffer and bcg. The v seven is super light and very well made.

Looks very nice.  Which spring are you going to use?

 

I think you're on track shooting for 11 oz.  Here's my .223 for the day, with a 9.5 oz BCG and 2.0 oz buffer.  I had 2 hammer follows on the first magazine, and no other issues today.  On the last magazine fired in the video you'll hear my timer beep.  Was trying to get the splits.  I don't really trust the results.  I don't know if it was the cold, or the suppressor, but I had to put it on max sensitivity to get anything to register, and at that point it would register clicking the buttons.  But there were a few strings with .10 - .15 splits

Oh thats not me in the vid and not my vid.....i just was impressed with his dumpage lol

It's a MVB arc stock and I can only use the springs made for it. It's a dual spring setup and pretty strong. The spring feel like Wolf extra power when in the gun. I think they will work fine.

This is the only trigger besides  full auto that makes me grin after shooting it too it looks fun but we are going to need more ammo

I should be able to run a few tests with 11 oz on 300 blackout later this week. I think I'm going to make two buffers one 3.0 oz and keep the 2.5 oz. The v seven bcg is very light. It deceiving because it looks like a strandard bcg until you pick it up, then its like that's light

Seekins billet is one lower I do not have BUT every billet I have put it in works. Measure the width of the interior of the seekins billet. The BFS trigger housing I have is .6810" and my billets measurements where listed a few pages back. I think the yhm and BAD billets were .6900". High shelf lowers will not work, most billet are low shelf. I think you are not going to have any problems with an ar 15 billet lower

I know what you're saying.  I built a titanium .30 cal suppressor and I think the same thing every time I pick it up.

I wish my first suppressor purchase were a Ti one. I thought about getting a yhm Ti but I have not pulled the trigger on it. I may have to wait a while because I bought 2 more of the BFS triggers. I hope they ship on Monday ( fingers crossed)

Thank you sir.  I found the video on their facebook page.  It seems to run well enough.  I wonder if that guy had to do any other mods to his 9mm AR to get it to run???

That's awesome!

What I used to do at the range when I had a pick up was back in, and stood off just to the side so my brass would land in the bed.

Ill post the results here. The only thing I would worried about with reducing the buffer weight is getting bolt bounce. I think 9mm is going to be interesting to work with tuning the rifle for optimum fast fire.

OP updated with some details on the BFS. A big thanks to Kuraki for working up the text for us.

I think you're right.  I'm drawing up a roller delayed upper.  There's a guy on Weapons Guild who built a receiver plate that essentially turned an MP5 upper into an AR upper, (to use on his registered machine gun) and that was pretty sweet too.

Ok, did I read somewhere in this thread that there was an AR15.com coupon code or discount?

That class/trigger discount is nice, just not very useful at the moment.

I think that discount is over but I could be wrong. I did not use it

Bolt bounce is a little bit of a worry for me on the 300 blackout. This afternoon I was screwing around with the buffer weights and these are the two I'm going to use.

The first is a standard carbine weight buffer 3.1 ounces. The photo shows the total weight with the bcg. Very light!


The second is an H1 weight. I used one of the FA buffer steel weights which is lighter than any of my other steel weights.I placed a tungsten weight at the rear of the buffer and the FA steel weight at the front.


My hope is that the tungsten weigh being at the rear will stop any bolt bounce but still tune the rifle to fire very fast like your setup. What do you think?

I like it.  I think 11.4 will run great.

Is that the ARC buffer?

Yes it is

I had to take ten thousands off the hammer to allow clearance in the BCG, other than this mod it is a stock BCG and buffer, both heavy.

Who manufactured your 9mm bcg? (I am assuming it was Cmmg but I have to ask)

Do any of you BFS owners own or have access to a Sig MPX 9mm?  It would be interesting to know if or how well this trigger would run on that platform.  It sounds like other aftermarket AR triggers run fine in the MPX.  

I have to say...This trigger is looking mighty promising.  That said, I'm waiting to see if the ATF decides to break some recall news or introduce some regulation related to this concept at the SHOT show as they've got a bit of a history of trying to address topics like this when they have all of the big players in the room for SHOT.

If it survives SHOT 2016, I may have to place an order

Wes

Whats the difference? It's not like the ATF is gonna run down to your house, and take your BFS trigger pack from you..

Mine was lost in a tragic boating accident, rifle and all.  

If they do, at least I got to enjoy the hell out of mine for a while before they did.

I highly doubt they will disapprove the trigger. The binary mode does not meet the federal nfa definition of a machine gun. A MG is one function or pull of the trigger. The BFS is clearly two functions a pull and a release (or a pull in reverse). If the ATF says that two functions is a MG then all semi autos could be classed as MGs. If two functions equals a MG then why not three. They should rule based on the letter of the law. They can not rule by interpretation intent of the law. That would be very subjective in a ruling and lead to a lawsuit. Pretty bad one if thousands of these triggers have been sold.

What is the trigger pull weight in either mode?

This how does it compare to a geissele ssa

Mine is breaking around 6.5LBS last I put the gauge on it.

Damn that's a bummer.  Hoping it was 4.5-5 lb range

6.5/2= 3.25 lol

I'll see when I get out to the range today on the trigger pull wt I get. The release pull would be negative wt and I'm not sure if that will measure. My buddy has the gauge and he is going with me today. To me it feels like an ALG trigger but that was after I broke it in a little. The binary mode feels the same only the release pull is very nice. It shocks you when you cycle it the first time in a dry run. The trigger pull is not as good as a geissele SSA but the BFS is in a class of it own.

FYI, Just got my shipping confirmation on the Drop-In I ordered on 12/17.

Ok..so after showing the sammich maker yalls videos of your triggers in action, i finally got the green light to buy one...

I may have asked before, but i didnt see where it posted...

Is there some sort of discount or promo code for these? Arfcom discount? Free shipping? Free cup of coffee? ANYTHING??

Im ordering one as soon as payday hits...

Also, what type of warranty and/or life expectancy are we looking at with these??