Description
The ALG Defense Advanced Combat Trigger (ACT) is designed for those shooters where tradition, value and regulatory concerns are of primary importance. The pull of the ACT is very similar to a standard mil-spec trigger, however it is sharper and the grittiness of the stock trigger pull has been removed while the traditional reliability of a stock trigger remains. The pull weight is not lower than the M4/M16 minimum weight specification of 5.5lbs.
NOTE: Included with the ACT is the Purple reduced power hammer spring as well as a full power hammer spring.
1. Performance Advantages for the Shooter
The ALG Defense ACT trigger pull is smoother and sharper than a stock trigger. This is accomplished by polishing the sear surfaces smooth and HardLubing the trigger components.
Sear geometry has not been changed from the standard profile so the high reliability that the stock trigger is known for is unchanged.
Trigger and hammer are made from true 8620 alloy steel military specification castings, correctly carburized, quenched and tempered for high surface hardness.
Disconnector is 1070 High Carbon steel properly Austempered into the spring range of hardness.
spring are corrosion resistant and meet military specifications.
A full force hammer spring is used for positive ignition of all type of ammunition.
Trigger and hammer pins are improved over stock mild steel by using 4140 Chrome-Moly steel that has been quenched and tempered. Pins are centerless ground to a fine finish and a diameter 0.001″ larger than stock to reduce play in the trigger assembly while retaining a slip fit into the weapon lower receiver. Both pins are Nickel-Teflon coated.
Pull weight is above the U.S. Military minimum pull weight of 5.5lbs but does not reach near the upper limit of 9.5lbs. Generally, the pull weight is about 6.0lbs.
2. Advantages for the Armorer
The ALG Defense ACT trigger is an enhanced standard trigger so maintenance and installation procedures are unchanged.
Trigger assembly parts may be interchanged between triggers, there are no matched sets.
As a trigger meeting the essential U.S. Military trigger specifications for the M4 Carbine, the ALG Defense ACT can be substituted for lower performing stock triggers while still staying in compliance with Unit or Departmental requirements.
Additional information
| Weight | 6 oz |
|---|---|
| Trigger Style | Single Stage |
| Stage 1 Pull (lbs) | 5.5 |
| Total Pull Weight (lbs) | 5.5 |
| Trigger Bow | Curved |
| Drop-in | No |
| MPN | 05-199 |
| UPC | 854014005212 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Reviews
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Customer Reviews
4.9
Based on 36 Reviews
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TA
US
08/21/2025
ALG COMBAT TRIGGER
Good trigger with smooth operation and i like that there are two weight options for a lighter or heavier pull.
CE
US
08/12/2025
ALG ACT
I’ve used several drop-in and Mil-Spec style triggers… this may be the best value of any trigger I own! Used the 4.5 lbs spring, wall, break and reset are awesome! Will not disappoint! Great sale price and service from AR15Discounts!
MA
US
12/24/2024
Outstanding combat trigger
The quality and fitment are superb. The permanent coating really helps with the smooth 4.5lb pull. If you’re not a fan of the silver you can always tape of the top end of the trigger and hit it with a little spray paint, leaving the coating on the interior components.
NK
US
I recommend this product
12/03/2024
Well-known product at the best price on the internet
AR15Discounts.com had the ALG ACT at the lowest price on the internet, even after applying discounts with other retailers. The quality of this product is well-known and speaks for itself.
SM
US
I recommend this product
05/02/2023
Best trigger for the money
Best value trigger on the market.
