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
Excellent single stage trigger
by Robert Wagner
This is the way to go if you don't want a two stage trigger. I received it fast from PA and installed it, replacing a very gritty mil-spec. What a pleasant difference! This is a very worthwhile upgrade.
Great Trigger
by John
This is my second ALG trigger and I dropped this in a new build with a JP 41/2 spring and it works great. Clean and crisp. Tough to beat price wise, relative to what you get. PA, as usual, fast, efficient and on time.
Wow!
by Tony D Smith
This is an awesome trigger. So very happy I got it.
trigger creep
by john altmeyer
the ALG Defense combat trigger is a must for your AR. It eliminates all creep that is in most factory triggers. I've used this trigger in 6 AR builds. If you prefer a single stage trigger...this is it. It breaks clean, with a pull of around 5 lb. This trigger will help you become a better shooter and close your group size. A clear upgrade for your AR platform.
Bulls Eye!
by Steven Claggett
The ALG combat trigger combined with JP enhanced ignition springs gave me a super smooth, crisp sub 4lb trigger.
Great Trigger
by Michael McKenney
Smooth, clean, and predictable break. Installed on my S&W M&P 15-22. If I would have tried this first, I may have used it on my Yankee Hill Carbine instead of the Geissele SSA-E. I know we are talking about two different classes of triggers but for the money it has no equals.
ALG ACT Trigger
by Rocker
Save yourself some bucks. For a combat trigger it cant be beat. Super smooth and void of that factory grinding that throws your rounds. For distance or precision work, yeah, you'll need a pricey unit. I've been running a Hyperfire 3G for that and love it. But for combat conditions, this is the right trigger.
ALG Defense 05199ACT Combat Trigger
by AA
Primary Arms was awesome to deal with. Purchased the trigger to find out a few hours later there was a sale w/ coupon code. Primary Arms honored the code after the fact, no questions asked. Will definitely continue to support a company who values their customers.The trigger is of high quality manufacturing, looks great, feels even better.
Wow
by SC
Not a huge fan of two stage triggers in a non-target setup (had an expensive one have issues in a carbine class), prefer single stage reliable triggers in a defense/combat setup. This one is A++ wasn't expecting much, pleasantly surprised, zero take-up and very crisp break. Still probably 6lbs or so but night and day over a kit mil-spec trigger. May try the QMS as a standard trigger for builds from now on if it's anywhere close to this one. Little cash and 5min install is well worth what you get out of it.
No complaints, I'm glad I tried it.
by Tactikev
No complaints on the trigger and I bought it to educate myself. I've put together about 4 AR's with standard lower parts kits. Of the 4, I would say this ACT is smoother than 2 of them but no better than than the other 2. The 2 that I consider equal have quite a few rounds on them - both live and dry-fire. Perhaps the ACT will loosen up and improve slightly over time. I have no complaints, but I doubt that I will buy another one.