Let me start out by saying I am a trigger snob. I have ALWAYS done my own triggers to ensure they were EXACTLY what I want. I can easily create sub 3 pound AR triggers with zero creep and very little over travel. I do triggers on my pistols, my rifles as well as my shotguns.
Over the years I have tried all kinds of triggers. Gieselle, RRA as well as dozens of other brands. Some I liked and some I hated.
When Hiperfire triggers first hit the market I was intrigued and understood the concept. Being a trigger guy I understood how it worked and why it did what it did. But I held off because I felt it was too young of a design yet.
Well about a month ago I decided I was going to buy a Hiperfire. I looked at the various models and settled on the 24 3G version. It has the least amount of take up as well as the lightest trigger pull. It was also on sale for $149 and that was appealing because I was not going to buy their $250 "competition" trigger.
The trigger is similar to a standard milspec trigger but it has two additional coil springs that counter the hammer springs weight when cocked. This removes the weight on the sear, reducing the friction and the break weight. But as the hammer falls the coil spring toggle over center and apply additional force to the hammer to ensure consistent ignition of the primer. It installs just like any milspec trigger and requires to fitting or adjustment to get it to work. And even without the coil springs installed it is a nice trigger although a bit heavy.
It comes with three sets of coil springs used to adjust the break weight. The heavier the coil spring the lighter the trigger pull. I say break weight because there is very little "pull". The coil springs allow for 2, 3 and 4 pound pulls. And because it uses a pair I assume it is completely possible to use different springs in the pair to fine tune it even more. Add a 3 pound coil and a 2 pound coil to give a 2.5 pound pull. Perhaps I will try it to see if it is possible.
We suffice to say I am impressed. I installed the heaviest coil springs, giving it the lightest break, and it is the best trigger I have ever pulled. I actually thought something was wrong because it felt so good. It is an amazing trigger, both in feel and function. Replacing the coil springs, to adjust break weight, is a 30 second job that requires no tools. And because the coil springs add force to the hammer strike the hit is much harder. The trigger I have is supposed to be 2.5 pounds but I seriously doubt it is above 2 pounds.
I liked the first trigger so much I have bought a second. I installed the first in a billet and the second in an Anderson and there is no difference in pull weights. The manufacturing tolerances do not affect the pull weight or feel of these triggers.
If you are looking for a Hiperfire buy it from Joe Bob Outfitters, they have the 3G on sale for $149.
Here is a chart of the differences, those are Hiperfire prices. Joe Bob has them SIGNIFICANTLY cheaper and worth every penny.