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Ar-15 Lower Parts Kit W/ Act Trigger
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$113.00
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SKU: 100042563
Overview
Built for assembling or refreshing an AR-15 lower, this complete parts kit brings together the core controls and small components needed for a clean build. It includes the ACT trigger along with the bolt catch, magazine release parts, safety components, buffer retainer pieces, trigger guard, and takedown hardware. The option to purchase it with or without the grip gives some flexibility for matching the kit to an existing setup or preferred furniture. For hunters and shooters who want a straightforward lower build package, it offers the necessary parts in one place without unnecessary extras.
Why Hunters Choose the Alg Defense
Complete Lower
Parts kit includes the core
Includes Act
Trigger as part of the
Covers Bolt
Catch, magazine release, safety, and
Trigger Guard
Related pins are included for
Available Without
Or without the grip, offering
Key Features
- Complete lower parts kit with ACT Trigger included.
- Includes bolt catch, magazine release, safety, and buffer retainer components.
- Supplied with trigger guard, takedown detents, springs, and pins.
- Available with or without the grip.
- Manufactured by ALG Defense.
Best Used For
- For builders assembling an AR-15 lower with a complete parts kit and ACT trigger included.
- For users wanting a single kit that covers core lower receiver controls and small parts.
- For rifle owners choosing a kit that can be purchased with or without the grip.
- For hobbyists replacing multiple lower components during a fresh build or parts refresh.
Specifications
| Act Trigger | Included |
|---|---|
| Bolt Catch | Included |
| Bolt Catch Plunger | Included |
| Bolt Catch Roll Pin | Included |
| Bolt Catch Spring | Included |
| Buffer Retainer | Included |
| Buffer Retainer Spring | Included |
| Grip Option | Can be purchased with or without the grip |
| Mag Release | Included |
| Mag Release Button | Included |
| Mag Release Spring | Included |
| Safety | Included |
| Safety Detent | Included |
| Safety Detent Spring | Included |
| Takedown Detent Springs | Included |
| Takedown Detents | Included |
| Takedown Pins | Included |
| Trigger Guard | Included |
| Trigger Guard Roll Pin | Included |
Pros
- Complete lower parts kit includes the core components needed for an AR-15 lower build.
- Includes an ACT trigger as part of the kit.
- Covers bolt catch, magazine release, safety, and takedown components.
- Trigger guard and related pins are included for assembly.
- Available with or without the grip, offering configuration flexibility.
- Manufactured by ALG Defense.
Considerations & Trade-offs
- The kit is sold as a complete lower parts set, so it includes components you may already have if you are replacing only a few parts.
- Grip availability is optional, so the final setup depends on whether you choose the version with or without the grip.
- The description lists the included parts, but it does not provide detailed specifications for the ACT trigger or the individual components.
- This is a lower parts kit only; it does not include an upper assembly or other complete rifle components.
Suggested Comparisons
- AR-15 lower parts kits
- AR-15 trigger upgrades
- AR-15 grip options
- AR-15 build components
Suggested Accessories
- AR-15 grip
- Lower parts kit
- Trigger guard
- Takedown pin set
Frequently Asked Questions
What is included in this AR-15 lower parts kit?
The kit is listed as a complete lower parts kit with an ACT Trigger. Included parts are: bolt catch, bolt catch plunger, bolt catch spring, bolt catch roll pin, mag release, mag release button, mag release spring, buffer retainer spring, safety, buffer retainer, safety detent spring, safety detent, trigger guard, trigger guard roll pin, takedown detent springs, takedown detents, takedown pins, and the ACT Trigger.
Does this kit include a grip?
The product description says the kit can be purchased with or without the grip. The provided data does not specify which option is included with this listing.
Who makes this lower parts kit?
The manufacturer listed in the product data is Alg Defense.
Is this a complete lower parts kit or do I need to buy additional small parts?
It is described as a complete lower parts kit. The included components are listed in the product data, but any additional parts needed would depend on the specific build and are not identified in the source information.
What trigger comes with this kit?
The kit includes an ACT Trigger, as stated in both the short and long descriptions.