ALG Defense Combat Trigger

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ALG Defense Combat Trigger (ACT) 05-199


Quick Overview

SKU: 12058
UPC: 854014005212
MFR#: 05-199

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.
• Springs 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.

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The ALG Defense ALG 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: HardLubing is ALG's term for electroless Nickel plating with an integral modifier to the base nickel plate. Either Boron or Teflon is used to enhance surface hardness, wear resistance and corrosion resistance and also create favorable tribological properties of the trigger components. Testing has shown that differential coating of the trigger parts contributes to the sharpness of the ACT's single stage pull. The trigger component is plated with Nickel-Boron which has a high surface hardness combined with excellent wear resistance. The color is a pleasing matte light grey that may be painted on non-functional surfaces if the shooter so desires (such as the trigger bow that is visible outside the lower receiver). The hammer, disconnector and trigger/hammer pins are plated with Nickel-Teflon which combines a low coefficient of friction with good wear resistance. The Teflon impregnation colors the metal a mottled, greyish/green. Parts coated with Nickel-Teflon cannot be painted. Both coatings are highly corrosion resistant eliminating the oil seal of traditional phosphated firearm components.

SKU: 12058
SKU 12058
Brand ALG Defense Inc
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 12058

Questions and Answers

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Browse 2 questions Browse 2 questions and 6 answers
Will this trigger work in a Colt 9mm AR without modifications?
Bruce D on Jun 25, 2018
BEST ANSWER: Can't say with certainty on a Colt product. However this trigger works fine in my generic mil spec AR stripped lower equipped with a Palmetto 9mm blowback carbine upper.
What is the difference between this trigger and the qms trigger?
Larry V on Mar 17, 2019
BEST ANSWER: If qms is the one that comes with a lower kit the combat is better but an adjustable trigger is worth the money to me.


4.8 / 5.0
17 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Just outstanding.
Smooth sharp break.
April 25, 2019
3 months ago
ALG ACT trigger from PSA
Great trigger, this is my favorite trigger at this price point. I like the clean break, lack of creep and the consistent 4.5 lb. pull with the purple spring.

I definitely recommend it to all my friends. It is a hugh upgrade from a common mil-spec trigger.
November 26, 2018
7 months ago
Awesome affordable upgrade
Makes the trigger reset very short with a crisp pull. Excellent affordable upgrade. I have this trigger on all my rifles.
October 27, 2018
7 months ago
Nice upgrade
Nice upgrade, can actually feel the crisper break from standard milspec trigger.
October 10, 2018
8 months ago
Good trigger
Good smooth trigger for the money
User submitted image
Added Sep 15, 2018
September 15, 2018
9 months ago
Excellent trigger group
Smooth and crisp..great buy
September 2, 2018
9 months ago
Great trigger for the price. Crisp break.
July 30, 2018
1 year ago
Good upgrade
Still a mil-spec style but much improved pull. Reset is distinct. Very good trigger for a “fighting” rifle.
July 26, 2018
11 months ago
Very Impressed
I'm completely sold on this item. I will never buy another "trust me, it's mil spec" trigger and hammer again. ALG is a quality product from top to bottom; much better than "mil-spec". Try it once and you'll be hooked. Note: This is the only AR product that has actually impressed me in a long time.
June 20, 2018
1 year ago
Absolutely awesome
Awesome trigger group. It is not a match trigger, but it is the smoothest and most crisp stock trigger I’ve used. I will absolutely buy more.
June 19, 2018
1 year ago

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