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AR15.COM
1/9/2026 8:35:15 PM EDT
I purchased a set of Armory Craft Actions Trigger Reduction Springs. It comes with:
- Reduced Power (-25%) Sear Spring Set (2 springs)
- Reduced Power (-50%) Sear Spring Set (2 springs)
- Reduced Power Trigger Return Spring (-10%) x 1
- Reduced Power Trigger Return Spring (-20%) x 1
- Reduced Power Striker Safety Spring (-20%) x 1

AC Action springs

Which springs would be best to use here? While I want to reduce the trigger pull weight, particularly at the wall, safety is paramount. Hoping it also might make the trigger feel less squeeshy.

Also picked up a MCarbo flat trigger to help with the perceived trigger pull.

Everything is dropping into a Flux Raider, so they have limitations on what can be installed. Flux said anything with an aftermarket trigger bar wont work in their kit and an adjustable trigger will likely not fit. Trigger shoe replacements were mostly good to go according to Flux.
1/9/2026 9:31:59 PM EDT
[#1]
I modified an M17 and M18 with -25% sear springs, a +10% trigger return spring, and trimmed the sear height to .020"  

The M18 trigger breaks clean at 4 1/4 pounds like an M1911.  The M17 breaks infinitely cleaner than an OEM spray bottle squeeze lever.
1/9/2026 10:46:38 PM EDT
[#2]
Can you tell me more about trimming the sear height?
1/9/2026 11:32:36 PM EDT
[Last Edit: Sinister][Edited] [#3]
Disassemble the pistol.  Polish the sear face and the striker contact pad.

Attached File

Attached File


Measure the sear face height with a feeler gage.  File and stone down until you reach .020"

Attached File
1/11/2026 7:51:43 PM EDT
[#4]
Quote History
Originally Posted By Sinister:
Disassemble the pistol.  Polish the sear face and the striker contact pad.

https://www.ar15.com/media/mediaFiles/18978/sear_height_jpg-3691299.JPG
https://www.ar15.com/media/mediaFiles/18978/striker_contact_pad_jpg-3691302.JPG

Measure the sear face height with a feeler gage.  File and stone down until you reach .020"

https://www.ar15.com/media/mediaFiles/18978/sear-striker_jpg-3691307.JPG
View Quote


+1 all the way
Cp
Presidents Hundred 2022-2024
US Army/ CMP Distinguished Pistol Shot 2015
US Army/ CMP Distinguished Rifle 2022
USAR Service Rifle Team and Service Pistol Team 2010-2025

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