ZEV Introduces Adjustable Single Stage Rifle (SSR) Trigger

Zev, known for their high-end Glock offerings, is pushing ahead with new products for new platforms. Having become one of the star players in the de-facto handgun completely customizable platform, they are turning their attention on another completely customizable platform, the AR-15.

The new SSR is a non-drop-in trigger, “designed to bridge the gap between the multitude of two stage triggers intended for duty use, and single stage competition triggers.” To this effect, it accomplishes its goals on a technical level marvelously. The trigger is completely adjustable for pre and over-travel. Notably, all adjustments are held under detents to ensure recoil and subsequent vibrations will not change the adjustment.

Pull weight is user-selectable between 3.5 and 5.5 lbs, swapped quickly by changing hammer springs. The trigger bow has been extended for shooter comfort and Zev states the trigger is adjustable for reset over time, which will come in handy for those who set their triggers to hair pulls.

Perhaps most striking on the trigger is the PVD TiCN coating, giving a bright orange hue. It will be hard to miss noticing the Zev when installed in your favorite modern sporting rifle. The coating is not cheap. The trigger is retailing around $250.

Features From ZEV:
– Easy User Install Providing A Crisp Single Stage Trigger Break
– Adjustable to Most Lower Receivers for Sear Engagement and Over Travel
– Adjustable Reset For User Preference
– Detent Retained Adjustment Screws
– Durable PVD TiCN, Copper Coating
– 3.5lb or 5.5lb Trigger Pull Depending on Hammer Spring Used
– Extended Trigger Pad

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • MadMonkey

    $250? When did ZEV get so cheap?

  • 48conkli

    I Get the “technology and research into these triggers, but basically all these companies are milking money with these parts. The coating probably makes little to no difference. It still is the size and similar shape to a part that cost 35 bucks. These single stage triggers should not cost more than 100 dollars at the most. This mark up is a joke. Take a look at a james madison Tactical single stage drop in for 89 to 99 bucks You get something that took some extra designing and is a fair price. I can see with a 2 stage trigger running a little more but it makes sense. Maybe its just me but, I will never buy one of these,

    • Kyle

      The coating actually makes quite a bit of difference. It adds a whole other level of lubricity to the sear surfaces and there are two major things that this affects. First, it will make any creep or takeup much less noticeable. The second is that it allows you to have a much stronger hammer spring without sacrificing feel because of the first reason mentioned.

      The cost for the ZEV Trigger goes into the R&D and development as well as custom parts, casting and proprietary information. With the JMT Trigger, that is simply someone else’s design with the JMT logo slapped onto it. The ZEV trigger will undoubtedly be a much better feeling, more reliable, and stronger trigger in the long run.

      • Jared Vynn

        I doubt the coating adds much in manufacturing costs though, and there are other similar performing coating in use on triggers for less now. I have a feeling it’s mostly just a cosmetic feature intended to make the product look better and more valuable.

        • Kyle

          Coating for a good PVD runs about $4.00 per part. This is not just a cosmetic coating, although it does add value. You have to realize that they have roughly $10-$12 more per set with the coating with regards to their cost. At the minimum there is a 100% markup to cover shipping and handling and all logistics related to the parts being coated. That doesn’t even allow for any dealer pricing on the parts.

          I find it funny how naive a lot of people are when it comes to manufacturing. They simply think you can just add 25% to your cost and boom, you’re a millionaire.

          • Marcus D.

            If it only adds lubricity to the sear, why did they have to coat the whole piece in this stuff? Plus, a lighter spring will not necessarily lead to light strikes, and a well made sear has almost no take-up or grit to begin with.

          • Kyle

            Do you not understand how PVD works? Obviously not. Selectively coating surfaces costs much more than coating the whole thing. And no, a lighter spring won’t necessarily lead to light strikes, but from my own personal testing, you can run a 4 lb spring and only have a 2.5 lb pull weight. Also, I hope you realize that shortening the pull, overtravel and sear engagement has an affect on the feel as less area of the surfaces are in contact, thus making any imperfections less noticeable.

          • Marcus D.

            Bull cookies. You only need to coat one surface to have the desired effect. Further, a properly designed and machined FCG has minimal sear engagement to begin with, and a proper polishing job on what are very hard steels to begin with result in the same qualities you describe with this overpriced trigger. My ACT trigger has virtually no take-up and over-travel that is so small you can barely feel it. Although heavier, it is just as crisp as my Kimber–and the Kimber has more take-up. Great triggers have been made for multiple decades without any of these fancy coatings. This is just a fancy trigger designed to fool the consumer into believing that they need the next greatest thing. Coatings are far more effective on parts that have large engagement surfaces, not surface engagements that are measured in millimeters.

          • Kyle

            You may only need to coat one surface, but as I stated, it’s much more expensive to coat one surface than it is the entire thing. Do yourself a favor and search up the PVD/CVD process.

            And yes, a proper polishing job on very hard steels yields good results, but you then add a coating that is much more slick with a lower coefficient of friction, not only will it be smoother, but it will last longer. There is a reason that the coatings are used all over every industry for many tribological purposes. And in the world of sear engagements, a single millimeter is quite a bit.

            As a tip for you, I am in the firearms industry as an engineer and have done hundreds of hours of research and testing with PVD/CVD coatings with regards to fire control.

          • Marcus D.

            It is much more expensive to coat one piece than it is to coat the three separate pieces of the FCG? That makes no sense. I would bet dollars to donuts that the vast majority of shooters could not tell the difference between this magic coating and a properly made uncoated FCG, especially when we are talking about a movement of a millimeter or less for a 3.5 to 5.5 lb trigger. And I would also bet that the vast majority of shooters will never wear out the sear on their rifles, since we are talking tens of thousands of firings before that happens. So maybe I and the vast majority of shooters are not the target audience, unless we have money laying around with no useful purpose.

          • Kyle

            For the lowest coefficient of friction possible it it necessary to coat both interacting surfaces. There are wear surfaces on all three parts, hence all three parts being coated. If you’re unaware of how a trigger in an AR works, let me know and I can send you a diagram.

            I bet that a vast majority of the three gun/action shooters, that this is geared towards, can notice the difference. As I’ve stated, the point of the coating isn’t only for improved feel, it gives the ability to shoot a wider range of ammo due to the fact that you can have a much stronger hammer spring while still attaining the low pull wait.

            I will agree with you on one thing, you are clearly not the target market as you are only looking for a gun that will shoot 1-2 MOA that you can shoot from your La-Z-Boy with a keyboard on your lap.

          • Marcus D.

            Insults impugn your credibility. I understand the operation of the trigger group full well, and IMO the only factors that affect feel, aside from take-up and reset are the sear engagement, the trigger spring and the hammer spring. [There is obviously some issue with the interaction between the trigger and the pin, but that too is minimal as the surfaces are smooth–and I don’t see that this company, which it appears you represent, coat the pins or, as some have done, but in roller bearings.] Any friction with the hammer or the reset mechanism are not felt by the shooter, and neither the hammer nor the BCG care about how smooth it is. “Grittiness” is always a function of sear surfaces and length of sear engagement. Trigger and hammer springs effect the force necessary to fire. And a short sear engagement is what is the key factor in a “breaks like a glass rod” feel. And if Fast Fingered Miculek can put five shots on target in less than a second with an AR without your fancy coatings, I just cannot see that they are at all necessary for this component of the rifle.

            But you are right, I don’t shoot three gun, just targets, so I am not the target consumer group. Last, AFAIK, the average AR only shoots 1-2 MOA, some even worse. You want better, you are into a couple of grand. And that is not the majority of shooters out there.

          • Kyle

            You insulting a product simply because it’s not what you’re in the market for ruins all credibility you have on the subject. All friction in the trigger system is felt by the shooter. More friction is caused by heaver springs, however, you can reduce that friction by PVD coatings.

            The speed that Miculek can shoot has absolutely no bearing on whether or not a trigger feels good or whether or not the trigger could benefit from it. No one has ever said that they are necessary for a functioning rifle, but to not realize the added benefits is just being naive. As you have stated, this is not the product for you, so why come in here bashing it like it shouldn’t even be produced?

          • Marcus D.

            Well my my my, aren’t we touchy. Do I sense a LARGE emotional investment here?
            Your contention that “all friction in the trigger system is felt by the shooter” is simply false. The only friction felt by the shooter is in the trigger pivot and the friction at the sear generated by the sear surface and the spring set. Friction in the movement of the hammer isn’t felt any more than any friction involved in resetting the hammer. All of that happens after the trigger is pulled and without the involvement of the shooter at all.
            I mentioned Miculek because every video I’ve seen of 3-gun has shooters pulling their triggers as fast as they can. To me, it seems the most important thing would be trigger travel (both uptake and overtravel), and trigger pull weight as effecting speed. Any miniscule improvement over a Timney or Geissele, if any, due to these coatings will not be felt at all. The system is therefore no more than a gimmick.

          • Kyle

            Again with the flawed argument. I have no vested interest in this product at all. I simply find it saddening that you have to come in here to call a product pointless just because it’s something YOU wouldn’t buy. Just because you slap the trigger with every pull and don’t feel everything, doesn’t mean that everyone else is the same. Similar to what you mentioned, you’re also not a majority of the shooters out there.

            Also, you specifically state that trigger pull weight affects speed, which as I have stated, is lowered by approximately 25% with regards to the hammer spring. Therefore, per your own admission, this system is more than just a gimmick.

            However, ask a three gun shooter this question “Would you rather have a 3.5 lb pull with a 3.5 lb hammer spring, or would you rather have a 2.8 lb pull with a 3.5 lb hammer spring?” Please, feel free to post their answer.

  • Christian Hedegaard-Schou

    $250 for what looks like a slightly improved mil-spec trigger?

    For that money you can get a proper Geisselle trigger. Or if you just want a bomb-proof mil-spec, you can get the ALG Defense ACT for $69.

    ZEV must be smoking the good stuff.

    • Marcus D.

      I won’t pay big bucks for just a coating that has little IF ANY effect on the operation of the trigger. While it is true that the ALG is not adjustable, it is a solid, crisp, high performing trigger group. I got the QMS, but it is a bit too heavy; should have paid the extra $20. (But I can fix that with a $5 spring swap.)

      • Joe Gamer

        My ALG ACT triggers(from Midway) all came with two sets of springs, one for 5.5lbs and one for 3.5lbs

        • Marcus D.

          Yeah, well, I should have gone that route, but money was tight at the time and my build over budget, so I got the QMS.

  • Kyle

    Just out of curiosity, who else has a trigger with a custom casting as well as having detent adjustments on the trigger for overtravel, engagement and disconnector?

    • Jared Vynn

      There are plenty of companies with adjustable triggers, thing is are the detents necessary? No they are not needed, just a solution in search of a problem. There are plenty of great triggers available at near half the price with similar features.

      • Kyle

        Detents can be just as necessary on triggers as they are gas blocks. Gas block screws work their way out of adjustment through normal use, just as can happen with trigger adjustments. The detents are added security to that not happening. They aren’t in search of a problem as the problem is already there.

  • 22winmag

    Did anyone else notice the clipped tip and mild bow on this trigger? Not a flat trigger and not a combat trigger either.

    Just call the TiCN finish what it is… Rose Gold. This may or may not be the next S3G but there cannot be enough high end triggers for rifles, especially ARs. Now where is the 4.5lb spring???