Details
Details
The ALG Defense Advanced Combat Trigger (ACT) is a premium upgrade for AR-15 rifles, designed for shooters seeking the trusted reliability of a mil-spec trigger with enhanced smoothness, sharpness, and corrosion resistance. Featuring a pull weight above 5.5 lbs to meet M4/M16 military specs, the ACT improves upon standard triggers with HardLubing—ALG's advanced electroless nickel plating process using Boron or Teflon to deliver superior wear resistance, low friction, and excellent corrosion protection. Ideal for law enforcement, duty use, or value-conscious builders, the ACT maintains stock geometry for consistent function while offering a refined single-stage trigger experience.
Features:
- Smoother and sharper trigger pull than standard mil-spec triggers
- Maintains original sear geometry for high reliability
- Nickel-Boron plated trigger for high surface hardness and wear resistance
- Nickel-Teflon plated hammer and disconnector for smooth, low-friction operation
- Pull weight approximately 6.0 lbs (mil-spec compliant, 5.5–9.5 lbs)
- Trigger and hammer made from 8620 alloy steel; disconnector from 1070 high-carbon steel
- Full-force hammer spring ensures reliable ignition with all ammo types
- Corrosion-resistant mil-spec springs
- 4140 Chrome-Moly steel trigger/hammer pins; oversized for reduced trigger group play
- Standard installation with no need for matched parts or special tools
- Complies with U.S. military requirements for M4 Carbine triggers
- Assembled in the USA
Specifications
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
130 reviews
Best trigger for the money
by Jimmy
I have one in a DPMS and one in a home built, both fit perfectly and both break at 5.5lbs consistently.
ALG combat trigger looks good
by Mark DeNeault
I have not installed the trigger yet, so this is not quite a review. I found out my lower is a large pin Colt so this trigger will not work, but I am working on a solution at the present time. Found a source for bushings, small pins(not meant for the purpose of what I want) but my gunsmith said it should work just fine.Will let people know if it works and even if we try the project. Expensive registered receiver here in Caleeeeeee. so will proceed with caution.
Great Trigger
by Richard Sanfratello
I got this trigger on sale and I was extremely impressed with it. Primary Arms shipped within 3 hours, which astonished me considering some of the other places I have bought from, and packaging was up to par. Overall, I would recommend both primary arms and this trigger.
Trigger
by Bill
I do not like 2 stage triggers and I do not like the mil spec junk that comes standard on most AR platforms. I thought I was stuck with the stock trigger until one of my friends told me about the ALG ACT. I bought one for my AR-15 build and I like it so much I bought a second one for my AR-10. If you prefer a single stage trigger like I do, I highly recommend the ALG ACT!
An amazing trigger
by Drew
I absolutely love this trigger. I'm in the process of building my first AR-15 and decided to buy the ACT instead of going with a stock trigger. I'm so glad I did! It has a very clean, crisp break and feels like the higher end triggers without the higher end price. I would highly recommend this to anyone. Will definitely buy again
Awesome!
by John Sickel
Heard some good reviews, so I bought one to try. It's awesome. Smooth, with no grit or creep and not too light. Similar to a Geisselle at a quarter the price.
My first AR (Zombie Eradicator) Build
by Ulrich Smith
Had just received my lower from the Umbrella Corp. and was looking for a decent trigger that wasn't going to cost me more than $100. During the Black Friday holidays, Primary had a great sale going on and I ordered the ALG Combat Trigger after having read quite a few good reviews on it. Haven't had a chance yet to test it but Primary Arms was super to deal with and super fast shipping also. I'll be looking for more of my AR parts here for sure!!
ALG Defense 05199ACT Combat Trigger
by Richard M
Great trigger. Absolutely no gritty feel. Very little takeup. Will buy this trigger and a lpk without FCG for all future builds.
ALG ACT Trigger
by Mike M.
Great trigger, very nice machining, would buy again. As usual, shipping and customer service is second to none.
ALG
by 556TAC
Great trigger, check spacing on connecter, springs had a little trouble but will work out.