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

The ALG Defense AR-15 Lower Parts Kit with Grip and QMS Trigger is a complete solution for builders ready to assemble or refresh a rifle lower receiver. This kit includes everything you need to finish the fire-control and safety components of your AR platform, sourced from a brand known for quality small parts that won't break the bank. Whether you're building your first AR or stocking up for the next project, having all the springs, detents, pins, and functional pieces in one kit beats hunting down parts individually.

At the heart of this kit is ALG's QMS trigger—a mil-spec two-stage unit designed for reliable, predictable break. It's paired with a complete grip and all the supporting hardware: bolt catch assembly, magazine release, safety selector, trigger guard, takedown pins, and the handful of springs and detents that make it all work. This is a genuine stripped-lower builder's kit, not a light-duty collection of random parts.

If you already have a grip you prefer or need one for another project, ALG also offers this lower parts kit without the grip, giving you flexibility in how you spec your build. For AR shooters who want to control their parts sourcing and aren't chasing match-grade triggers, this kit delivers solid, straightforward functionality at a practical price point.

Key Features

• Complete lower parts kit with QMS mil-spec trigger
• Includes pistol grip
• Full bolt catch and magazine release assemblies
• All springs, detents, and pins needed for lower receiver assembly
• Trigger guard included
• Available with or without grip for flexibility

Specifications

Frequently Asked Questions

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

The kit contains the bolt catch (and plunger, spring, roll pin), magazine release (button and spring), safety selector (with detent and detent spring), buffer retainer (and spring), trigger guard (and roll pin), takedown pins and their detents and springs, plus the QMS trigger and a pistol grip.

Can I buy this kit without the grip?

Yes, ALG Defense offers this lower parts kit with the option to exclude the grip if you already have one or prefer a different model.

What type of trigger is the QMS?

The QMS is a mil-spec two-stage trigger, designed for reliable function and predictable break in standard AR-15 applications.

Is this kit suitable for an AR-15 lower receiver build?

Yes, this complete kit is designed specifically for AR-15 platform builds and includes all the small parts and assemblies required to finish a stripped lower receiver.