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Posted: 1/13/2016 9:38:01 PM EDT
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I want to build/fabricate a "binary" or dual-action trigger.
Squeezing the trigger fires the rifle, then releasing the trigger fires the rifle. Franklin Armory will sell me one, in their rifle, for the low, low price of $1500. Let's make one. We'll need a secondary sear to catch the hammer after the trigger pull. That's the tricky part...I don't know how to make a secondary sear (btw I can make proteins with quatenary structure, but they don't work in my AR). We're smart guys. How hard can it be?? G. |
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Quoted:
My concern would be if the NFA would step in as while this does onky fire one round with each pull of the triggered it would fire a second when you release it. The law is one round per each function of the trigger. The pull and the reset are different functions. The concept is not new by any means - it's been around for years. Here's an ATF letter from over a decade ago (ironically on my 12th birthday  )
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Quoted: My concern would be if the NFA would step in as while this does onky fire one round with each pull of the triggered it would fire a second when you release it. You can make a set from an M16 fire control group or an M16 burst control group fairly easily. Unfortunately the ATF told Franklin Armory their version needed a back up disconnector so no single point in trigger travel could result in hammer follow. Modding an M16 fcg will have no provision for a back up disconnector. |
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Quoted:
Franklin's trigger is available for 399... I see that.... And I would actually buy one, my question is what modification do they need to do to the lower to justify the $130 install on a lower already cut for full auto? Many lowers have the shelf milled these days even though we don't use it |
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Franklin Armory has no immediate plans to sell the trigger by itself; only in their lowers or complete rifles.
After watching a demo of it on the Military Arms Channel on YouTube, I want one. Using my powers of Google-fu, I found quite a few discussions about how to modify the mini-14 trigger to do this with a bent staple. However, with that modification you are stuck in double tap mode at all times. I know we can do this, and by "we" I mean someone else besides me. G. |
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Quoted: Franklin Armory has no immediate plans to sell the trigger by itself; only in their lowers or complete rifles. After watching a demo of it on the Military Arms Channel on YouTube, I want one. Using my powers of Google-fu, I found quite a few discussions about how to modify the mini-14 trigger to do this with a bent staple. However, with that modification you are stuck in double tap mode at all times. I know we can do this, and by "we" I mean someone else besides me. G. Mine went in without shims and with no need to mill anything on my Anderson lower. If you want to make your own I posted pictures in the geissele trigger thread if how you can mod a 3rd burst kit into a binary trigger. I did not do the mod, just marked up a picture with where you will need to cut. I won't perform the mod without an ATF letter saying it's acceptable. |
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Quoted: There was a thread on here somewhere hinting that Geissele was working on a binary trigger system with a possible debut at SHOT. How sweet would that be if he could engineer that with a very short reset? |
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I don't see anything on the Franklin Armory web site about the triggers being for sale separate from those already installed into a lower/rifle.
The blurb about the triggers says they are only being offered already installed in their receivers. Is this one of those deals that you have to call in order to take advantage of? Thanks if someone knows....I want one. G. |
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User Phawbaker claims to hold patents on this that Franklin is violating. He has licensed his patents to Fostech who is building the Echo trigger. Quoted: I am the inventor and patent holder of the dual mode trigger. I have been working on the concept since 2010. I patented the trigger, applied for patents in 2012, have received two patents on the trigger received in 2014. http://www.google.com/patents/US8667881 I also received BATF approval in 2014 for my trigger prototype. If you search my post history, you can see I was on here looking for manufacturers. I rather naively believed that my patents would protect me. I have since assigned my patents to Fostech, who refined the design and are introducing the trigger as the ECHO trigger. Franklin Armory has copied my concept, has infringed on my second patent, and to the best of my knowledge has not received a BATF approval letter (correct me if I am wrong). In this video of my prototype: www.youtube.com/watch?v=JfxggJvaCc0 If you read the comments, you can see where Franklin Armory is trying to get me to release and post my BATF approval letter (back in 2014). I am not going to tell you how to spend your money, just had to correct the erroneous assumption that Franklin Armory brought this concept to fruition and is the inventor of this trigger, and that Fostech is a copycat. It is actually the other way round. Franklin just got theirs out first. Fostech has been assigned my patents and I am working with them. I am not going to go into what I think of Franklin Armory, but I can tell you that Fostech DID NOT copy Franklins concept as many here seem to assume. |
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Quoted: ..............but you gotta send in your rifle, which is just not happening for many of us. Quoted: Quoted: Franklin's trigger is available for 399... ..............but you gotta send in your rifle, which is just not happening for many of us. I think Fostech's design may be a little better, unfortunately it's another $80. |
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Quoted:
I want to build/fabricate a "binary" or dual-action trigger. Squeezing the trigger fires the rifle, then releasing the trigger fires the rifle. Franklin Armory will sell me one, in their rifle, for the low, low price of $1500. Let's make one. We'll need a secondary sear to catch the hammer after the trigger pull. That's the tricky part...I don't know how to make a secondary sear (btw I can make proteins with quatenary structure, but they don't work in my AR). We're smart guys. How hard can it be?? G. Just throwing an idea out there: A sliding trigger (think 1911) with some kind of a rocker type of actuation between the trigger plate or bar and the original sear. Basically, pulling the trigger causes a mechanism to push upward to a high point against the rear of the sear midway through the stroke, then back down as you pulled the rest of the way through the trigger. On release, it would do the same thing again. The main disadvantage would be a longer trigger pull. No new disconnector, hammer, or anything else needed, just a modified sear and new style of trigger. |
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