I’ve never seen value as a civilian in burning ammo faster than the 150-200rpm I can do with a SD3G.
Cuz they shoot real, real fast and it’s scary…this means we also need to remove some of youses fingers, too.
The closest illegal thing to this trigger is a bump stock. But there is no stock in this mechanism. It is a kinda internal mechanism, bump trigger.
BAD NEWS
A couple vids show guys running this trigger perfectly, for awhile. Then stoppages occur. They tinker with the buffer, spring, get another upper, etc.
But here a guy took apart one of these triggers and tells us why they all begin to fail. It is one tiny spring getting bent inside the trigger.
https://www.youtube.com/watch?v=vuEMhe_oWpo
Maybe a Mark 2 design will fix this.
The only Rare Breed this guy will own comes from Wild Turkey
Ok, so I had one of these triggers, because I just have to try everything.
In a 14.5 ml Hanson Chf, a5h1/green, lmt ebcg, with xm193, it ran at about 900rpm. Very much like an m16a1. In 90 rounds I experienced no malfunctions. It was extremely difficult to single shot.
Ultimately, I uninstalled it and sold it. I tried getting it running in an MPX and was unsuccessful due to the design of the FRT trip mechanism exerting upward pressure on the MPX trip bar.
Upon exam, I discovered that the trip return spring was kinked and estimated that it needs a torsional spring, rather than a compression spring (especially one at an improper angle). I discovered this on my own, and only found that this was a bigger issue when Rare Breed posted an obstinate message on Instagram regarding people making YouTube videos of the FRT issues, and calling them out as “kitchen table gunsmiths” with an attitude that seemed to claim that their trigger is perfect and doesn’t need any revisions, even though it’s clearly poorly designed in this regard. I looked on YouTube and saw the video referenced here a few posts back. My trigger looked the same, and my findings echo the video OP. The spring design is clearly flawed and either needs a torsional spring or the compression spring on a detent or an all together different orientation.
Additionally, I had a close friend at Sig reach out to the owner of Rare Breed to get him some loaner MPX and MCX for development. I notified RB of the findings re: the MPX and trip spring design, to which I’ve had no response.
The general attitude of RB seems to be passive-aggressive towards the experienced people who have discovered flaws of the FRT design. Rather than take it in the chin, and realize there are some improvements to be made, they prefer to lash out with name calling and shit posting. I sold my FRT, ended the experiment, and won’t be buying another. I would expect no warranty support in the extremely likely case that the trigger malf’s.
I think the design has merit, and I honestly believe that the concept could easily be designed into a product that actually works well and fixes the shortcomings of the FRT while not infringing any alleged patents. I liken the design to a reciprocating charging handle, as trigger pressure creates feedback on the hammer. I think there should be a way to create a leverage system which resets the trigger without allowing the trigger to create a feedback loop. And don’t even get me started on the trip spring, that thing doesn’t look to have gotten more than 10 minutes of attention.
I can’t say I am surprised. Before I got this trigger, I estimated RB had a clever design but was not so keen with attention to detail. After seeing Rare Breed blindly recommend an H3 buffer in any gun with the FRT, as well as the red dot optics literally bouncing around in the demo videos, I figured there would be some issue in the FRT that were not QC based, but from a “any engineer worth their salt would have noticed this” lack of attention to detail. RB blindly recommending an H3 tells me that their detailed understanding of the AR15 is somewhat lacking. Almost like they just tried a bunch of different buffers to make it work in their guns, and ended up with H3. Rather than really understanding bolt bounce, but also issues which can arise with over buffered guns (ie: short stroking)
LOL! 
Yeah, the one I used belonged to someone else, and he sold it to a guy with a BLM hat, who was then tragically murdered while peacefully protesting in Portland.
Are you planning to get one of your own after reading / watching the reviews above? Still believe it is worth the coin???
Josh is onto something.
Interesting concept for sure, and interesting footnote in firearms legal discussion and technical review.
Before or after the kinked spring? :jester:
Seriously though thanks for the first hand review.
Here you go, only 75 bucks to fix your $750 trigger…
One of my buddies has one. He chamfered the spring pocket side and pivot point side where the spring gets pinched. He also replaced the hammer spring to a slightly heavier weight. He says he can easily fire single shot reliably now and the other spring cannot be pinched due to the clearance anymore.
We’ll see it works out for him.
I did an edit and it reposted the whole thing.
I’d love to have one but the price is a stumbling block for me as my budget for this pursuit is really tight.
Forced reset does seem the best, or I should say most accurate way to go, rather than a binary trigger or bump stock set up for accurate multiple shots.
The Binary trigger seems too prone to accidental discharge when releasing the trigger because it’s normal to release the trigger to stop firing and to retrain to fire on release is somewhat, perhaps, I don’t know, unnatural?
It really does seem to fit the ATF and NFA definition of legal as it only it prevents pulling the trigger until the bolt is locked in battery, and not a true sear releasing the hammer like full auto does, and the hammer does not fall if you do not pull the trigger.
After watching the animation, it would seem simple to replicate the function and simply add a torsional spring.
The only design shortcoming is they should have designed it to work on the fa safety setting. That way the design would have more control of what you intend on doing.
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BDU had them this morning, so I ordered one for funsies. Can’t imagine it being anything more than a toy, but why not.
What is BDU?