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GEISSELE AUTOMATICS LLCSD-3G Super Dynamic 3-Gun Flat Trigger for AR-15

19 Reviews
|
Summary
SD-3G Super Dynamic 3-Gun Flat Trigger for AR-15
Brownells #
100007545
MFR #
05-166
UPC
854014005076
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Specifications
Item Width (Inches):
0.900
Color:
Black
Trigger Style:
Single-Stage,Flat
Item Length (Inches):
2.300
Item Height (Inches):
2.700
Item Weight (lbs):
0.100
Make Model Fit:
AR-15.Universal;AR-308.Universal
Quantity:
1
Material:
Steel
Model Number:
SD-3G
Pull Weight:
3.5
Restriction
Can we ship this to you? (US only)
Description

Made In The U.S.A.

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Many customers have asked us to show which products are made in America, and we’ve begun working with our vendors to identify them. This information, however, is not available for all items nor does it imply that foreign merchandise is of lesser quality. We will continue to gather this information to assist our customers in making informed buying decisions, and will keep our website current with the latest information.

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Guaranteed. Forever.® return policy applies to the product’s original owner along with proof of purchase. Any items returned within 45 days of shipment are entitled to a refund. Any items returned after 45 days of shipment will be issued store credit in the form of a Brownells Gift Card. If a Brownells/Sinclair product was purchased through another retailer as a new product we will require proof of purchase to replace or refund.  (Refund will be issued as store credit in the form of a Brownells gift card.)  

The Geissele Super Dynamic 3 Gun (SD-3G) trigger is the flat trigger bow version of the Geissele Super 3 Gun (S3G) trigger. Like the S3G, the SD-3G has a shortened pull length and a lightning-quick reset to give it a unique, hybrid trigger pull that is a cross between a traditional two-stage and single-stage trigger while still retaining the safety and robustness of a two-stage combat trigger. The SD-3G’s flat trigger bow further enhances the trigger’s performance by reducing the perceived pull weight and improving the trigger’s tactile feedback to the operator making it ideally suited for 3 Gun competition shooting.


The SD3G trigger has a very short, light pull and reset. Geissele do not recommend it for duty use, bench rest, accuracy work or shooting small groups. It is designed for close course competition use where rapid target engagement with quick follow up shots are required.


Please note, Geissele’s triggers are designed for mil-spec AR15/M4 carbine rifles. Geissele’s AR15 triggers are not compatible with the Sig MPX/MCX weapons or Pistol Caliber Carbine AR15/M4 variants. Using them in these platforms will void the warranty. Please refer to Geissele’s Super MCX SSA or Super MPX SSA if you are using these platforms.


SPECS
  • Type: Hybrid Rolling Break
  • Total Pull Weight:
  • 3.0 - 4.0 lbs. (Lighter Spring)
  • 4.5 - 5.5 lbs. (Heavier Spring)
  • Adjustable: No
  • Trigger Bow Type: Flat
  • Recommended Use: 3 Gun Competition
  • Pin Size: Mil-spec
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SD-3G SUPER DYNAMIC 3-GUN FLAT TRIGGER FOR AR-15 Reviews
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Overall Rating
5.0
19 Reviews
Review Summary
The SD-3G Super Dynamic Trigger is highly praised for its crisp pull and smooth reset, making it ideal for competitive shooting. Reviewers appreciate its installation ease and feel, likening it to higher-priced triggers. While there are concerns about its suitability for self-defense due to a lighter pull, overall satisfaction is evident, with many expressing intent to purchase again.
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19 Reviews
September 21, 2021
Great trigger, what more can I say
This is my 3rd SD-E.Crisp and clean, easy install, and the same feel in all my ARs.They have certainly improved my shooting.I put them in my hunting, target and defensive AR builds.Wish these were available for my large pin Colt, I am currently waiting for a SSA-E large pin, it's basically the same trigger except it's curved, unfortunately they don't make a large pin with a straight bow.
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Verified Purchase
December 23, 2023
Looks awesome
I installed it but have not yet got the chance to try it.It's feels awesome but I will be going tomorrow to try it out.Thank you
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Verified Purchase
June 19, 2024
Best trigger
Everything and more.Crisp 3.5 pull with a very short positive reset that is very audible.Great trigger!
MORE DETAILS
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Verified Purchase
November 03, 2024
The SD-3G is "very niiice!"
Installation is simple enough if you follow Caleb's youtube video on the Brownells channel its even easier.Overall the quality is on par with a $200+ trigger.This trigger replaced an Elftmann Match flat bow so I had high expectations of this new trigger.Its just about as smooth but slightly heavier (2.75lbs vs 3.5lbs).But when its all said and done, great trigger.
MORE DETAILS
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February 02, 2025
Crisp and Consistent
The Geissele SD-3G trigger delivers a crisp and light pull, ideal for competitive shooting.Its flat bow design offers a comfortable and consistent feel.Enhance your shooting speed and accuracy with this top-tier trigger upgrade.
MORE DETAILS
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Customer Questions
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430104028
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452000209
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19 Questions
A
A
Anonymity
October 26, 2024
Will these fit a Sig MCX 11.5 5.56
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00
C
C
Customer CareCompany Answer
November 26, 2024

Yes, it should.

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00
M
M
Mark MacDonald
October 07, 2024
Will this trigger work in the Ruger AR556 ?
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00
J
J
JudeCompany Answer
October 07, 2024

Yes this trigger will work

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00
M
M
Marv
September 22, 2024
Description says -finely-tuned two stage trigger. What is the pull weight on each stage? Total is stated at 3.5?
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01
C
C
CalebCompany Answer
September 25, 2024

Per Geissele the 1st stage is 2.0 - 2.5 lbs, and 2nd stage is 0.9 - 1.3 lbs.

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10
T
T
Tj
June 29, 2024
Will the sdg3 work in an mcx virtas ??
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00
C
C
Customer CareCompany Answer
July 16, 2024

Yes, it will.

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S
S
Steve
April 13, 2023
Can this trigger SD-C SUPER DYNAMIC TRIGGER be used in a HK 416 build?
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00
J
J
JAKECompany Answer
April 13, 2023

Yes

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N
N
Nathan
February 16, 2023
Does the geissele sd combat trigger come with extra springs to change weight if the trigger?
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01
G
G
GunmsithCompany Answer
February 16, 2023

Does not included extra springs according to Geissele.

More Info:
https://geissele.com/amfile/file/download/file/c690da5027917bc743d53abb19697b39/product/26/

Super Dynamic Combat (SD-C) Trigger NotesPlease note,
SD-C triggers are designed for mil-spec AR15/M4 carbine rifles. Our AR15 triggers are not compatible with the Sig MPX/MCX weapons or Pistol Caliber Carbine AR15/M4 variants.  Using them in these platforms will void the warranty. Please refer to our Super MCX SSA or Super MPX SSA if you are using these platforms.COLT 901 RIFLE USERS PLEASE SEE ARMORS TOOLS FOR PINS (PART# 02-269) THAT WORK WITH THE WIDER RECEIVER.

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G
G
Goldfinger
September 02, 2022
Will this fit in a Springfield SOCOM 16 CQB?
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00
C
C
Customer Care
September 30, 2022

No, these triggers are for AR-15 platform rifles. We currently do not have a trigger for an M1A.

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H
H
Hector from PR
February 13, 2022
Will this fit in a cmmg banshee 9mm?
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01
C
C
Customer Care
February 14, 2022

From the Geissele website "Our AR15 triggers are not compatible with the Sig MPX/MCX weapons or Pistol Caliber Carbine AR15/M4 variants.  ".  Try part # 100-800-167 insted. 

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Z
Z
Zombie
November 26, 2021
Will this work on my sig rattler 300 BO?
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20
C
C
Customer Care
December 09, 2021

Yes it will.

 

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C
C
Cory
June 05, 2021
Will this work on a Sig Tread 716, .308?
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02
C
C
Customer Care
June 11, 2021

Yes

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