[Review] RISE Armaments SA-140 Super Sporting Trigger

    RISE Armaments RA-140 SST

    RISE Armaments was kind enough to send me out one of their RA-140 Super Sporting Triggers shortly after they launched (and when they were in super high demand). I had the opportunity to run the trigger for somewhere north of seven-hundred fifty rounds, and during training sessions for 3-Gun, and, as with their other trigger, am a huge fan.


    Just like the RA-535, the RA-140 Super Sporting Trigger is a drop in one-piece unit. It is a single-stage trigger and is CNC machined from high-grade, heat-treated tool steel, The body is anodized aluminum.




    Just another shot of the trigger… 🙂

    The trigger blade on the RA-140 is curved, unlike the RA-535 (which is straight). In fact the trigger blade looks a lot like the ALG QMS trigger that came with my Primary Weapons Systems Modern Musket.

    Trigger blade is curved and nicely smoothed along the edges.

    Trigger blade is curved and nicely smoothed along the edges.

    Trigger blade is curved and nicely smoothed along the edges.

    Trigger blade from the other side.

    They do note that you should not adjust or “tamper with” the set screw, so you will definitely need to use some sort of pin kit with it. They recommend the KNS pin kit (the RA-535 comes with KNS pins; the RA-140 does not).

    Trigger right after install. KNS Pin Kit (RISE recommended)

    Trigger right after install. KNS Pin Kit (RISE recommended)

    They have produced a short video (starring Chris) demonstrating the installation. It really is very fast and easy to install.

    Technical Specifications (From RISE)

    • Single-stage trigger system
    • 3.5-lb. pull weight
    • Clean break with a short reset
    • Black 8625 hard coat anodized aluminum cassette
    • Comfortable rounded, trigger
    • Manufactured and assembled in our facility according to strict AS9100 aerospace requirements, which are more stringent than standard gun manufacturing requirements
    • CNC machined from high-grade, heat-treated tool steel and aluminum
    • Fits most .308 and .223 AR style platforms
    • Self-contained design makes it easy and quick to install with no fine-tuning needed
    • KNS pins recommended


    I ran this trigger for a bit longer than I did with the RA-535 before writing this review (the RA-535 was the first after-market trigger I had ever installed). I am finally getting to the point that I can tell what I like about certain triggers and their behaviors. People throw around terms like “crisp” and “gritty/smooth” and “break”, and unless you can compare them side-by-side I think it is challenging to understand exactly what those terms mean, so I am going to take a shot here.

    Crisp refers to the movement at which the trigger breaks, and “crisp” means that the trigger won’t move until the shooter has applied enough pressure to release the hammer. The “break” is the actual point of release. Triggers that are “gritty” have a rough feel, much like trying to pull the bolt back when it is dry and dirty. A “smooth” trigger on the other hand has, well, a smooth feel to it, much like a well oiled bolt–there is no feeling that it has friction binding it. “Over travel” is the amount of movement in the trigger after the “break” (and is generally not a good thing as it is wasted movement). “Reset” is the amount of travel required after the trigger “breaks” and starts moving forward again before the trigger is at state where it can again be depressed. If anyone wants to further clarify in the comments, please do… 🙂

    As defined above, the RA-140 is both “smooth” and “crisp” which is exactly as expected on a single stage trigger. The “break” of the trigger is very clean, and there is no over travel. The “reset” is also very short.

    All in all, the Super Sporting Trigger is very much like the RA-535, but perhaps a smidge heavier feeling on the pull. Overall it definitely feels beefier.

    Again they recommend a KNS Pin kit for the installation. Personally I am not a fan of that specific kit. I think they are a bit too thick if you run something like an Odin Works extended magazine button. I’m more of a fan of one like the CMC Anti-Walk Pin Kit-Set. Ultimately whatever works for you and keeps the pins in place is the right option.

    I ran the trigger in a number of 3-Gun courses and other shooting drills. Honestly the trigger was so smooth, I kept forgetting it was a different model. The only real difference I noted was that the blade was slightly curved, opposed to flat, and that slightly affected my finger placement for the first couple of magazines. After that, though, I adapted and it was a non-issue.

    I personally don’t have refined enough touch to tell the difference between a three or five pound trigger (though I “think” I can tell between a three and seven-ish). But I can definitely tell when something feels gritty or sloppy, and the RA-140 was neither gritty nor sloppy. I feel like the reset is a tad bit longer, but short of comparing side-by-side I can’t point to anything objective. And even “longer” is still short.

    RISE Armaments again did a great job with the aesthetics of the housing and components–not that you are going to see anything but the blade. I stand by my original opinion (during the RA-535 review) that focusing on details you won’t see demonstrates a level of commitment to the product.


    Drop in housing, fully contained.  Starting to get a little bit of wear on the hammer after nearly eight hundred rounds.

    My biggest regret was not being able to truly run them side-by-side (on the exact same rifle build in all other factors).


    Once again, I think RISE Armaments has done a stellar job with producing a trigger. While not quite as distinctive and sexy as the RA-535 (I still have a favored spot in my heart for the red body), I think this is a fine upgrade to add to your weapon.

    I have no problem running the RA-535 in competition, or for speed shooting, but that is probably where I would limit it as well. I would, however, take the RA-140 Super Sporting Trigger to war…

    At a price point of just under $130, I would heartily recommend it as useful and functional upgrade if you are running a Mil-Spec trigger. If you can afford the RA-535, I think it still has a slight edge over the RA-140. Other shooters may swear by Timney and Geissele triggers; I swear by RISE Armaments.

    Tom is a former Navy Corpsman that spent some time bumbling around the deserts of Iraq with a Marine Recon unit, kicking in tent flaps and harassing sheep. Prior to that he was a paramedic somewhere in DFW, also doing some Executive Protection work between shifts. Now that those exciting days are behind him, he teaches wilderness medicine and runs an on-demand medical staffing business. He hopes that his posts will help you find solid gear that will survive whatever you can throw at it–he is known (in certain circles) for his curse…ahem, ability…to find the breaking point of anything.

    You can reach him at tom.r AT thefirearmblog.com or at https://thomasrader.com