What Is AR -15 Trigger? 💡
It refers to the trigger mechanism used in the AR-15 rifle, which is a popular semi-automatic firearm. The AR-15 trigger is a component that, when pulled, initiates the firing sequence, allowing the firearm to discharge a round.
How Does the AR-15 Trigger Works? 🔐
| 🤚 Finger on Trigger: The shooter places their index finger on the trigger, preparing to fire the rifle. |
| 📜 Take-Up Stage: Initially, the trigger has some slack or take-up. When the shooter begins applying pressure to the trigger, it moves backward slightly. |
| 🎯 Second Stage: As the shooter continues to apply pressure, they reach a stopping point or wall. This indicates the transition to the second stage. |
| 🎢 Trigger Break: Applying more force, the trigger breaks or releases, allowing the hammer to be released and strike the firing pin. |
| 🔨 Firing Pin Strikes Primer: The hammer, released by the trigger, strikes the firing pin, causing it to strike the primer of the chambered round. |
| 💥 Ignition: The impact of the firing pin on the primer ignites the primer’s sensitive chemicals, resulting in a small explosion. |
| 🔫 Round Fired: The explosion from the primer ignites the gunpowder within the cartridge, propelling the bullet out of the barrel. |
| 🔄 Reset: After firing, the shooter releases their finger from the trigger, allowing it to reset to its initial position. |
We believe this video can be helpful for you 📺
Types ⌛
- 🎯 Mil-Spec Trigger: The standard trigger found in most AR-15 rifles. It typically has a heavy and gritty pull, with a two-stage design for improved control and safety.
- 🔧 Enhanced Trigger: Also known as an upgraded or improved trigger, it offers a smoother pull, reduced creep, and a lighter trigger weight compared to the Mil-Spec trigger. Provides enhanced shooting experience.
- 🎯 Match Trigger: Designed for precision shooting, it has a light and crisp trigger pull with minimal take-up and reset. It offers excellent accuracy, making it popular among competitive shooters.
- 🎮 Single-Stage Trigger: Unlike the two-stage triggers, this trigger type has a consistent pull weight throughout, providing a more immediate and predictable break. Often preferred for rapid-fire scenarios.
- 🎯 Binary Trigger: A unique trigger system that allows for firing a round both when the trigger is pulled and released. It enables rapid-fire capabilities, with one round fired upon each trigger movement.
- 🔧 Adjustable Trigger: These triggers offer adjustable characteristics such as trigger pull weight, travel, and reset. Shooters can customize the trigger to their preferred settings for optimal performance.
- 🎯 Geissele Trigger: Geissele triggers are highly regarded for their quality and performance. They are known for their exceptional reliability, smoothness, and crisp break. Popular among enthusiasts and professionals.
- 🔧 Drop-In Trigger: Designed for easy installation, drop-in triggers are pre-assembled units that can be quickly dropped into an AR-15 lower receiver, replacing the existing trigger system. They often come with enhanced features and smoother pulls.
Please watch this video to learn more information 📺
Advantages 🔔
| 🎯 Enhanced Control | AR-15 triggers, especially upgraded or match triggers, offer improved control and stability during the trigger pull. This can result in increased accuracy and precision when shooting. |
| 🔧 Customizability | Many of them allow for customization of trigger pulls weight, travel, and reset. Shooters can adjust these characteristics to suit their preferences, optimizing their shooting experience. |
| 🎯 Safety Features | The two-stage design of most triggers provides an added layer of safety. The initial take-up stage allows shooters to assess their target and make conscious decisions before committing to the second stage and firing the round. |
| 🔧 Smooth Operation | Upgraded triggers often offer a smoother and more refined trigger pull compared to the standard Mil-Spec triggers. This can enhance the shooting experience by reducing creep and providing a crisper break. |
| 🎯 Rapid-Fire Capability | Certain triggers, like binary triggers, enable rapid-fire capabilities by firing a round both when the trigger is pulled and released. This can be advantageous in scenarios that require quick follow-up shots. |
| 🔧 Performance Enhancements | Aftermarket triggers, such as Geissele triggers, are designed to enhance the overall performance of the AR-15. They can improve reliability, consistency, and reset, providing a competitive edge or enhancing the shooting experience. |
AR 15 Trigger Review | Best AR 15 Trigger
| Image | Product | Brand | |
|---|---|---|---|
 | Timney AR-15 Trigger | Timney |  |
 | CMC Trigger AR-15/AR-10 Competition Trigger | CMC | |
| CMC Trigger AR-15/AR-10 Rifle Single Stage Trigger | CMC | |
 | FosTech Outdoors Echo AR-15 Binary Trigger | FosTech | |
 | Triggertech AR-15 Diamond Trigger | Triggertech | |
 | CMC Trigger for AR-15/AR-10 Rifle PCC Model | CMC | |
 | Triggertech AR-15 Adaptable Trigger | Triggertech | |
 | Luth AR-15 Velocity Classic Rifle Trigger | Luth | |
 | Timney Skeletonized AR-15 Rifle Trigger | Timney | |
 | CMC AR-15/AR-10 Match Grade Trigger | CMC | |
 | RISE Armament Lower Parts Minus Trigger Kit | RISE | |
 | HIPERFIRE PDI AR-15/AR-10 Drop-In Trigger | HIPERFIRE | |
 | Luth-AR AR-15 Velocity MPC Trigger | Luth | |
 | KE Arms AR-15 SLT-1 Sear Link Trigger | KE Arms | |
 | Guntec USA AR-15 Enhanced Trigger | Guntec | |
 | CMC AR-15/AR-10 Single Stage Trigger Module | CMC | |
 | Bravo Company MFG Point Trigger | Bravo Company | |
1# Timney AR-15 Trigger
The latest trigger model for your rifle. Thanks to the progressive design and the use of the highest quality materials on the market today, it has been possible to achieve the unique strength and reliability of the product. The single-stage trigger is designed to withstand intense work without visible chipping or breakage, as the hammer is eroded using S7 tool steel. This trigger model is specially designed for shooting at targets from the AR-15 rifle, which greatly simplifies installation due to the use of original pins for the trigger and trigger of your rifle. The transition from target to target is natural, making it an absolute advantage in a shooting competition.
2# CMC Trigger AR-15/AR-10 Competition Trigger
The latest trigger model from the world’s most renowned manufacturer guarantees precise shot alignment. Install on your weapon an autonomous, fully operational device that has passed all the necessary tests and is completely ready for use. CMC Triggers has been the original manufacturer of the Drop-In-Trigger group for AR-15 and AR-10 rifles since 2003. After we tested it in practice the critical working surfaces of the CMC sear have a fully patented machining process for superior surface cleanliness and dimensional control. Compared to competitors, state-of-the-art technology has been used to achieve surface cleanliness, guaranteeing excellent RMC.
3# CMC Trigger AR-15/AR-10 Rifle Single Stage Trigger
The latest development of a well-known world company, which allows controlled shooting from AR-15/AR-10 rifles. The critical working surfaces of this trigger model provide excellent surface finish and dimensional accuracy. Compared to other trigger models available on the market today, the basic manufacturing methods guarantee a meaningful indicator of 0 RMC.
4# FosTech Outdoors Echo AR-15 Binary Trigger
This model of the AR-15 rifle trigger is one of the most advanced triggers on the weapon accessories market today. For safety and reliability reasons, this trigger model has three different settings — safe, semi-automatic, and echo firing. Using the most advanced technology of our time, this model is produced with a patented design fully approved by ATF. Functionally, the echo trigger allows the shooter to select one of three different settings: safe mode, in which firing is completely blocked; semi-automatic mode when the firearm fires when the trigger is pulled; echo mode, where the weapon continues to fire even when the trigger is released.
5# Triggertech AR-15 Diamond Trigger
This trigger model features a frictionless trigger release, so your rifle’s insert trigger will have a short two-step action to provide a full stop with zero slip, an extremely short overrun, a tactical release of fewer than 0.03 inches, and offering outstanding reliability even in the harshest conditions. Based on our experience with CLKR technology, the traction weight is quickly and reliably adjusted in 2 oz. Increments using a reliable set screw with a pre-installed trigger. Since creep is completely absent, most shooters report 0.5 pounds lighter than other trigger models. This trigger model bears an adaptable name, as the change in pulling force does not affect the impact force at all, so you get reliable primer hits at any weight. Since the friction release technology does not rely on the coating, polishing, or lubricating of the main surfaces of interaction, the trigger pulls will be more consistent from shot to shot and after several thousand of these shots your weapon will remain is as accurate and reliable as it was when you first set up the device.
6# CMC Trigger for AR-15/AR-10 Rifle PCC Model
Due to the growing popularity of pistol caliber rifles, after careful research and development, SMS Triggers has released the latest trigger for pistol caliber rifles 9 mm. The trigger dimensions have been completely redesigned for versatility with a variety of bolt holders from a wide range of manufacturers, designed for 9mm platforms. These rifle triggers have a 3.5 lb uncontrolled force that breaks like glass. Also available with a classic curved bow, also available to order with the patented CMC signature flat trigger bow. The curved lower hook is exceptionally smooth to the touch and has an extremely clean kink. With excellent grip times and quick, long-lasting release, this trigger model is unmatched in today’s firearms accessory market. Critical key engagement surfaces are machined to provide superior surface finish and full-dimensional control. In comparison with competitors, when making this trigger model, progressive technologies are used, which guarantee indicators of 0 RMC.
7# Triggertech AR-15 Adaptable Trigger
Equipped with advanced release technology to ensure complete frictionless operation. Using the most advanced CLKR technology, it provides a traction weight that can be adjusted quickly and reliably in just 2 oz increments. Because there is no creep at all, most experienced shooters report approximately 0.5 pounds lighter weight than other brands of triggers. The advanced frictionless release technology at any weight, together with the progressive materials used in the development (in particular the high-quality 440C), provides exceptional corrosion resistance and extended service life. Since service life does not rely on coating, polishing, or lubricating key surfaces, trigger pulls will be more consistent for consistent aiming.
8# Luth AR-15 Velocity Classic Rifle Trigger
The latest innovation from the world’s most renowned manufacturer of weapon components and accessories is this trigger model. Thanks to the use of the most advanced materials and technologies, it was possible to achieve a highly effective combination, low coefficient of friction, and high microhardness. The surface of this trigger model will not rust and give your trigger a stylish dark green colour. The production uses a diamond-like carbon coating, which provides greater wear resistance during the entire life of the trigger. The high-quality AR-15 trigger makes your rifle feel like a bolt action rifle of unique quality.
9# Timney Skeletonized AR-15 Rifle Trigger
When creating a high-precision trigger for the AR-15 rifle, the most advanced technologies and materials were used to guarantee a high degree of reliability. This trigger model is factory-preset to either 3.4 or 4.5 lbs of pull at the shooter’s choice. The adjustment is quick. A factory-made rifle trigger and patented trigger pins are used for easy installation. It also uses a patented design that eliminates any rotation and deflection of the pin. The latest trigger model instantly puts you in the line of fire just minutes after installation and allows you to fire accurate shots throughout the entire life of the product.
10# CMC AR-15/AR-10 Match Grade Trigger
The newest model of the two-stage trigger group is a highly reliable rifle trigger, created using the most advanced technology. Uses a direct installation method that allows you to customize them yourself without the need for a professional gunsmith or any other additional tools. As a result of using this product, we found that with this model’s trigger, you can instantly convert your firearm into a two-stage, customized aiming trigger. Key shifting benefits include a heavier overall trigger pull. With this trigger model, you will always have a positive release of the trigger after each pull, so you don’t need to lose sight of the target while firing. If you’ve only used single-stage triggers throughout your shooting career, then you will need to try the two-stage trigger — it provides better firing stability.
11# RISE Armament Lower Parts Minus Trigger Kit
By installing the latest firearms trigger kit, your rifle will run at full power. The lower parts of the AP-15 include 20 parts to complete the custom assembly of the trigger. The triggerless lower set comes with standard trigger pins and a safety guard. These kits are not supplied with the trigger. If you need to replace several parts for your rifle at once, then this set is the best option for assembling a reliable and accurate weapon.
12# HIPERFIRE PDI AR-15/AR-10 Drop-In Trigger
The latest trigger model guarantees the highest stability of firing from automatic and semi-automatic rifles. Thanks to the use of the highest quality materials and progressive components, your rifle will always hit right on target, and the firing mode will be completely under the control of the shooter. Thanks to the presence of special automatic ceasefire systems and preventing the spring from breaking, your weapon will serve you faithfully for many years.
13# Luth-AR AR-15 Velocity MPC Trigger
Innovative development of one of the world’s leading manufacturers. The trigger, weighing only 3 pounds, is specially designed to provide maximum customization and improve the comfort of your gun grip. Each shoe is 3/8” wide compared to the standard 1/4″ wide for a pleasant tactile experience. Fully compatible with all AR rifles. The unique combination of progressive components and innovative materials guarantees long-term performance in all combat conditions.
14# KE Arms AR-15 SLT-1 Sear Link Trigger
The latest trigger model guarantees excellent shooting comfort. Through the use of the most advanced and high-quality materials and components, the manufacturers have managed to achieve a unique level of weapon stability when firing. Innovative production technologies guarantee the highest quality of every surface, pleasant tactile sensations, and ample opportunities for active firing in different modes — both automatic and semi-automatic or with single shots.
15# Guntec USA AR-15 Enhanced Trigger
Protect the trigger from accidental pulling with an enhanced protection fitting. High-quality materials were used in the production — in particular, the T6 aluminum used in the aviation industry, which makes this trigger model extremely durable and lightweight at the same time. Thanks to the use of improved trigger protection in combination with tactical gloves, this trigger model is extremely durable and versatile, guaranteeing stable firing. This trigger model is supplied with an advanced trigger mechanism manufactured by GuntecUSA, ideal for AR rifles.
16# CMC AR-15/AR-10 Single Stage Trigger Module
The newest trigger model is the original Drop-In-Trigger for the AR-15/AR-10 rifle since 2003. The critical working surfaces of the CMC sear have a patented processing process that provides excellent surface cleanliness and full control of high-quality dimensions. Compared to competitors’ products, the methods used to obtain surface cleanliness guarantee a roughness in RMS. This makes it possible to mount this product practically on any model of rifle and to conduct accurate and stable shooting in any battle conditions.
17# Bravo Company MFG Point Trigger
By using the highest quality components and materials, this trigger guarantees high firing stability. The use of polished nickel and Teflon allows this trigger to be provided with high-strength parts that guarantee a long service life. Bravo’s patented sear is used to ensure correct alignment. Shooting friction was reduced to 300% above the requirements for sporting weapons. By using this trigger model, you get a smoother trigger pull with less slip. Realize your full potential on the range with this trigger model.
Installation 🛠️
🛠️ Gather Tools: Collect the necessary tools for the installation, which typically include punches, roll pin holders, a hammer, and possibly pliers or screwdrivers depending on the specific trigger system.
🔒 Ensure Safety: Prior to any work, ensure the firearm is unloaded and the magazine is removed. Double-check the chamber to confirm it is clear. Safety is of utmost importance during any firearm-related task.
⚙️ Disassemble Lower Receiver: If necessary, disassemble the lower receiver of the AR-15 to gain access to the trigger group. Follow the manufacturer’s instructions or consult an armorer’s manual for guidance.
🔄 Remove Existing Trigger: Use the appropriate tools to remove the existing trigger assembly, such as pushing out the hammer and trigger pins. Carefully lift out the old trigger group from the receiver.
🧹 Clean and Inspect: Take the opportunity to clean the lower receiver area, removing any dirt or debris. Inspect the receiver for any signs of wear or damage that may affect the new trigger installation.
📦 Prepare New Trigger: Ensure you have read the instructions provided by the manufacturer of the new trigger. Familiarize yourself with the components and any specific installation steps or adjustments required.
🔩 Install New Trigger: Carefully insert the new trigger assembly into the lower receiver, aligning the hammer and trigger pins with the corresponding holes. Ensure a proper fit and secure the pins in place.
📌 Test Functionality: Before reassembling the rifle, test the functionality of the new trigger by performing dry firing exercises. Verify that the trigger breaks cleanly and the hammer resets properly after each pull.
🛠️ Reassemble Lower Receiver: Once satisfied with the trigger’s functionality, reassemble the lower receiver components following the reverse order of disassembly. Ensure all parts are properly seated and secured.
🧪 Function Check: After reassembly, perform a thorough function check to ensure the trigger, safety selector, and other components are functioning as intended. Confirm the safe operation and proper reset.
🔒 Final Safety Check: Double-check that the firearm is unloaded and conduct a final safety check. Verify that the trigger operates correctly and the safety functions properly before proceeding to live fire.
Watch this video to find more information 💻
FAQ 🍀
Conclusion 📗
Thanks to the use of the most high-tech materials and components, modern manufacturers guarantee the stability of shooting when using specialized triggers. They also ensure the reliability of each shot, minimizing friction during the slide. In our article, we have listed the most modern trigger models that will be the perfect complement to the AR-10 or AR-15 rifles. If you are looking for a model with minimal friction then focus on models #3 and #6. If you are looking for the most versatile model then look at #7, #8, and #11. The most versatile models are numbers #5, #9, #10.
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Thank you for all your replies! I decided to install the trigger on my own
Do I need specialized tools to install an AR-15 trigger?
Here’s a list of commonly used tools for trigger installation:
🧷 Punches: Roll pin punches or starter punches are useful for driving out pins during disassembly and reassembly of the trigger group.
🧷 Roll Pin Punch Set: A roll pin punch set with various sizes will help you remove and install roll pins.
🧷 Hammer: A small hammer with a non-marring or nylon head can be used to tap out pins without damaging the lower receiver.
🧷 Allen Wrenches: Depending on the specific trigger design, you may need Allen wrenches of various sizes to secure the trigger assembly.
🧷 Needle-Nose Pliers: These are handy for manipulating small springs and pins during installation.
🧷 Armorers’ Wrench or Multi-Tool: An armorer’s wrench or multi-tool can be helpful for removing and installing the castle nut, buffer tube, and other components if necessary.
🧷 Torque Wrench (optional): If you need to torque specific components to a certain specification, a torque wrench can ensure proper tightening.
Hello. What do you think – can I install an aftermarket trigger myself, or should I seek professional assistance?
🟡 Installing an aftermarket trigger can be done by individuals with proper knowledge and skills. However, if you’re unsure or unfamiliar with the process, it’s advisable to seek assistance from a qualified gunsmith or armorer to ensure safe and proper installation.
Not hard. I have Geissele. Replacing your old trigger and hammer units with the Geissele is easy. The package comes with pre-installed slave pins. Simply align the slave pins with the appropriate pin holes, drop in the new units, and use your old pins to drive out the slave pins. That’s it.
I installed a high-speed DMR and found it to be relatively easy. However, it involves several steps, including bending the spring to set the first stage pull weight, adjusting sear engagement, adjusting the second stage pull weight, and adjusting overtravel using set screws and allen keys. Although it’s a bit expensive, the trigger is of great quality. Additionally, you can easily adjust the second stage pull weight any time you want by simply twisting an allen screw.
It was so easy that I could have done it even if I were drunk.
I am currently building a precision AR 15 .224 Valkyrie rifle and I am unsure about which trigger to choose. I am looking for a trigger that has 0% creep, a clean break, and little to no overtravel, with a 2-2.5 lb pull. The large number of trigger companies and models available is making it difficult to choose. Does anyone have any recommendations?
Timney or Geissele.
I have experience with the following triggers and have liked all of them: Timney 3lb: I have one on my 3-gun AR. Geissele Rapid Fire at Brownells: I have one on my PCC race gun. It’s the fastest trigger I have ever shot.
I recommend trying the triggertech AR diamond