Details
Details
The Geissele Super Dynamic Combat (SD-C) Trigger is a high-performance, duty-ready upgrade for your AR-15 or AR-10 rifle. Designed with reliability and control in mind, it features a flat-faced trigger for improved leverage and feel, helping you maintain control under pressure while still enjoying a smooth, responsive pull.
This trigger installs just like a standard Mil-Spec unit and fits any .223/5.56 or .308 rifle using a Mil-Spec lower receiver with .154" trigger pins. Built from EDM wire-cut tool steel and finished in black for durability, it’s made to perform in even the most demanding situations.
Note: Trigger pull weights are approximate and may vary slightly between rifles.
Features:
- Fits all Mil-Spec AR-15 and AR-10 lowers
- Uses standard .154" trigger pins
- Flat trigger bow for better control and faster resets
- 4.5 lb total pull weight – tuned for safe, confident operation
- Smooth and consistent two-stage break
- Non-adjustable sear design for increased safety margin
Precision machined from tool steel with a durable black finish
The SD-C is a non-adjustable two-stage trigger with a 4.5 lb total pull, giving you a deliberate, predictable break that helps prevent accidental discharges in high-stress environments—perfect for duty, home defense, or tactical use.
Specifications
- Geissele Two Stage Triggers
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.Ratings & Reviews
33 reviews
Just awesome AAA+++
by Chris
First off i watch alot of sites for the best deals .primary arms finally had it for 160.so i jumped on it . Just alittle take up wall then break short reset .man when you pull the trigger it has force .love it I see why geissele has the reputation they have.love the flat bow great feel finger placement.. if you been deciding get one you won't regret it . Thanks primary arms for doing really good deals sometimes
My favorite long distance trigger
by walter -
The SD-C trigger is my favorite for long distance shots. The 1st stage pull is light into a good wall to rest on until the easy to predict light break of the 2nd stage. It’s got a great feel for the purpose. Geissele makes great triggers for all applications, thus just happens to be my go to for precision shooting.
I like it
by Vincent -
Happy with this on my Go-To build
Fantastic Upgrade
by Phil -
I have shot other rifles equipped with this trigger and loved the way they work. It’s been on my radar list for a while and I finally made my purchase. Incredible easy to install. I watch a couple videos and had zero issues. The whole thing took less than 5 minutes. That included removing my safety selector. I don’t think I have ever shot a trigger I like better than the Geissele design. Crisp break and reset is incredibly short. Very pleased with this product.
Crisp trigger
by Manny -
Will fit your PSA AR-10. Easy installation. Smooth trigger pull.
This Trigger speaks for Itself
by Dustin
If you are building any sort of mid-high quality AR you can not sell yourself short on a crappy cheap trigger group. After doing several hours of research on triggers for my SBR build I decided on the SD-E. The experience every time I squeeze the trigger is amazing. The first stage is a stable consistent ~2.5lbs motion with a prominent end point. The second stage provides a crisp quick break. The trigger release also provides a smooth constant motion with a light audible/mechanical click right before the second stage begins. The feel and the performance is amazing. All my future builds will contain Geissele triggers.
Geissele triggers seem to be hit-and-miss
by Patrick
Note that I am not comparing this to a basic commercial "mil-spec" trigger. I am comparing it to other Geisseles. It is the fourth Geissele trigger I've owned. Of those, the SSA and SSA-E are amazing. Very smooth 1st stages, perfect breaks at 2nd stage with no noticeable creep at all. This SD-C Trigger however definitely has some creep. In fact, within that creep is a definite 'notch' I can feel right before the break. It's very annoying when trying to squeeze off a shot carefully. I know it's a "combat" trigger and not a match/precision trigger. But this example is noticeably inferior to its close relative and functional equivalent, the SSA. In fact, I prefer the pull of my ALG ACT trigger over this one's.
well worth the money
by anonymous
Awesome upgrade over the standard mil-spec trigger.
The perfect trigger
by Casey King
This is the best trigger on the market. Geissele smooth, light and responsive but not too light. The flat trigger face aids in a straight pull.I've been looking for this exact trigger everywere Thanks Primary!!!
I got three.
by Akapop
What do you think? At two hundreds something a piece. I must have like it so much. Love the straight bow. Performance is as describe on the page.Just wish it comes in a package like Timney or CMC for easy installation.