Alg Defense Ar-15 Lower Parts Kit With Grip W/ Act Trigger

Building or upgrading an AR-15 lower receiver doesn't have to mean hunting down parts from five different suppliers. The ALG Defense AR-15 Lower Parts Kit with Grip and ACT Trigger bundles everything you need for a complete, functional lower in one package. Whether you're assembling your first AR, rebuilding a rifle, or keeping spares on hand, this kit eliminates the guesswork and saves time at the bench.

The standout here is ALG Defense's ACT (Augmented Combat Trigger), a combat-proven trigger that ships with this kit. Paired with a grip and all the small parts needed to complete your lower receiver, you're getting a cohesive, purpose-built setup rather than a grab bag of random components. This isn't just convenience—it's peace of mind that every piece was designed to work together.

The kit includes bolt catch assembly, magazine release, safety selector, trigger guard, takedown pins and springs, buffer retainer, and all the detents and springs that make an AR-15 actually function. No surprises, no missing parts, no trips back to the shop. For shooters who value reliability and don't want to overthink parts compatibility, this kit does the heavy lifting.

Key Features

• Complete lower parts kit—everything needed for a functional AR-15 lower receiver
• Includes ALG Defense ACT Trigger for reliable, combat-proven performance
• Comes with grip integrated into the kit
• All necessary springs, detents, pins, and hardware included
• Streamlined assembly—no hunting for missing components

Specifications

Frequently Asked Questions

What's included in this AR-15 lower parts kit?

The kit contains the ACT trigger, grip, bolt catch assembly, magazine release, safety selector, trigger guard, takedown pins, buffer retainer, and all necessary springs and detents to complete a lower receiver. Essentially, everything except the lower receiver itself.

Is the grip included with this kit?

Yes, this version of the kit comes with the grip installed and ready to go. ALG Defense also offers this kit without a grip if you prefer to source your own.

What's the ACT trigger, and why is it worth having?

The ACT (Augmented Combat Trigger) is ALG Defense's combat-focused trigger design. It ships with this kit as the trigger option, giving you a proven trigger out of the box rather than requiring a separate purchase.

Can I use this kit with any AR-15 lower receiver?

Yes, this is a standard AR-15 lower parts kit and will work with any standard AR-15 lower receiver.