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
Smart Upgrade
by Zachary Houghton
As someone who has built over a dozen AR's utilizing both mil-spec and high-end triggers the ALG trigger does not disappoint! This trigger went easily into a newly painted AR pistol and performed flawlessly during both zeroing and CQB style training. The trigger break is crisp the silver finish is unique and it's function matches triggers offered at twice this price point. Don't hesitate to drop one of these into your next build you'll be happy that you did!
Two Thumbs Up!
by Josh
The only thing I hated about my new AR was how terrible the trigger felt. I decided to give this trigger a try. The difference is night and day. Just a tiny bit of creepcrisp breakand short reset. No grit whatsoever. For the money you can't beat this trigger. I also had my order in my handsin east Tennesseein 48 hours. Hats off to Primary Arms for their quick shipping!
Very good trigger
by Hank
Nice upgrade to a stock trigger. Found a LPK where I could delete the trigger from the order and I subbed this in for my build. The lighter (purple) spring is probably 3.5 to 4 lbs. Nice break and not gritty. Minimal creep. Not a $250 Geissele, but a great trigger for the money. Primary Arms shipped my whole order all together and very quickly.
Much better than a basic LPK trigger pack.
by IntelMerc
I only need a trigger that's better (cleaner - less creepy or gritty) than a bare bones bag o parts kit, and $59.99 was all my momma gave me to spend. Ok so the ACT trigger arrived as scheduled and 30 minutes later I was dry firing and function and safety testing it. It sure seems worth the $60. I didn't even consider using the lighter purple spring since I don't even want to contemplate light strikes.
I don't have a trigger break guage so I can't say for certain, but based on the generic trigger pack it replaced, this ACT trigger pack is DEFINITELY smoother. I don't need light, I just need safe and smooth.
A++
by Salvador
Amazing pull, and looks beautiful on your rifle. Worth every $$
This is not the trigger you are looking for...
by Dan
I recently ordered two of these about a week apart from two different online dealers. PA being one of them. Oh boy, was I disappointed! On both hammers I found heavy tool marks at the disconnector engagement. The trigger reset felt HORRIBLE as you could feel the disconnector dragging it's self through the tool marks on the hammer. This was the case on both trigger groups which indicates it is not an isolated issue. I was able to smooth it a bit through delicate sanding and polishing. I feel that I wasted $120 as these were worse than the polished mil-spec triggers they replaced.
Great trigger, great company
by Chuck
I'm a newcomer to PA but I guess better late then never. This is a great trigger. Replaced the one that came in my PSA lower. Smooth and crisp. And PA has a new regular customer. Great company with great service.
Great trigger, great company
by Chuck
I'm a newcomer to PA but I guess better late then never. This is a great trigger. Replaced the one that came in my PSA lower. Smooth and crisp. And PA has a new regular customer. Great company with great service.
One Sweet Trigger
by Crackerneckdog
One sweet trigger, and for a great price. It comes with two springs, the purple one being the lighter. Primer ignition using the purple spring has proved reliable for me with a wide variety of ammunition. You just can't beat this deal!
Worth twice the price
by J Sowards
I'm very impressed with this trigger. With the purple spring it's extremely smooth and pretty light. I honestly think I like this more than my Geiselle SSA.