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Binary Triggers







Janizary

Geth Prime
Forum Supporter
2019 Supporter
2020 Supporter
#21
Unfortunately, if you're a trigger snob, there's no practical way to adjust out trigger over travel, as the over travel is necessary to reset the mechanism. That was a bit disappointing, as I like nice triggers.
Agreed. Of the two (BFSIII and Fostch Echo), the BFSIII has the better 'pull' (anecdotally, related to my preferences). The Fostech is mushy, squishy, and has quite a bit of travel before tripping the sear. I can definitely get better 'double taps' from the BFSIII than the Echo.
 

DonTom

Obsessed Member
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2019 Supporter
#22
That’s awesome Don, I apologize I steered you into the blue springco. You may not need it after all, unless you’re using a carbine receiver extension.
I discovered two buffer springs came with it. One spring was wound inside of the other looking like one spring at a close look. They have different strengths.

I have it together and cold tested for binary and semi, but I now am waiting for other stuff.

-Don- Reno
 
#23
My friend built up a BF gen 1 trigger in 5.56, and 762x39 uppers in carbine configuration. It was hoot to shoot but not practical accuracy wise beyond 25 yards. 1st shot on target, 2nd wherever. Guess that can mitigated with muzzle brake/compensator and whole lot of ammo for practice. We tried the drop in CMMG 22lr kit and it didn't feed one round. Maybe dedicated 22lr upper would be better. Never really had issues with that setup, only out ran the trigger few times out case of rounds. Friend sold the lower.
 

DonTom

Obsessed Member
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2019 Supporter
#25
I joined the Carson City range for $50.00 for two years. And today, I took my CMMG binary rifle there to waste some 5.7 ammo.

I also took my Thomson Contender to not waste so much ammo. At least the TC kinda forces me to take aim at a target, unlike the binary trigger that just asks for me to spray rounds down the range, no target necessary.

I think the single shot is just as fun as the binary trigger. I feel like the binary trigger is kinda like an expensive toy to use in 5.7, but I wanted to get it working and did. I now have the blue buffer spring in it. And I try to control the speed myself, which is still quite fast before it outruns the bolt, which I can still do if I really try to spray fast. But anyway, here is what it sounded like today.

-Don- Reno, NV
 
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#26
I joined the Carson City range for $50.00 for two years. And today, I took my CMMG binary rifle there to waste some 5.7 ammo.

I also took my Thomson Contender to not was so much ammo. At least the TC kinda forces me to take aim at a target, unlike the binary trigger that just asks for me to spray rounds down the range, no target necessary.

I think the single shot is just as fun as the binary trigger. I feel like the binary trigger is kinda like an expensive toy to use in 5.7, but I wanted to get it working and did. I now have the blue buffer spring in it. And I try to control the speed myself, which is still quite fast before it outruns the bolt, which I can still do if I really try to spray fast. But anyway, here is what it sounded like today.

-Don- Reno, NV
Wow that really cranks out some rounds. It works really,wow nice.
 

DonTom

Obsessed Member
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2019 Supporter
#27
Wow that really cranks out some rounds. It works really,wow nice.
One nice thing about the small 5.7 round is that when firing very fast, it doesn't move the rifle around as much as a 5.56. It's very easy to control the 5.7 x 28 at a very fast rate of fire.

So I think the 5.7 was a good idea for my binary trigger.

Now that I have it working near perfect (I can still outrun the bolt if I try to), I probably won't use it much in the binary mode.

-Don- Reno, NV
 

bullseyeman

Obsessed Member
#28
I use BFSIII and love it. I have found the best way to maximize rate of fire is to develop a cadence and NOT try to shoot as fast as you can. Let the trigger do the work. Easy to outrun the bolt on 5.56 if you don't. Much less a problem with .22lr. Had it installed by a gunsmith who fine-tuned it on the range for me.
 

DonTom

Obsessed Member
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2019 Supporter
#29
Had it installed by a gunsmith who fine-tuned it on the range for me.
On a .223/5.56 AR-15? If so, how come you didn't do the work yourself? AR-15's are easy and there are many You-Tubes explaining how it is done, if you have never done one before. I have put enough of them together that I no longer look at the videos, but I did at first.

I find putting them together is a major part of the fun. I have put together several AR-15's over the years. The tools to get the job done are not expensive or anything and probably last forever.

-Don- Reno, NV
 

bullseyeman

Obsessed Member
#30
On a .223/5.56 AR-15? If so, how come you didn't do the work yourself? AR-15's are easy and there are many You-Tubes explaining how it is done, if you have never done one before. I have put enough of them together that I no longer look at the videos, but I did at first.

I find putting them together is a major part of the fun. I have put together several AR-15's over the years. The tools to get the job done are not expensive or anything and probably last forever.

-Don- Reno, NV
Fun for you. Not for me. Zero interest.