Premium AR-15 Lower Parts Kit

A lower parts kit is essential to finishing your AR-type 80% lower or FFL-bought stripped lower receiver.

This upgraded LPK maintains mil-spec fitment, but it also comes with a MagPul pistol grip and Magpul MOE trigger guard.

This Lower Parts Kit Includes:

• Hammer
• Pistol Grip
• Trigger

Pivot & Takedown

• Pivot Pin
• Pivot Pin Detent
• Pivot Pin Detent Spring
• Takedown Pin
• Takedown Pin Detent
• Takedown Pin Detent Spring

Bolt Grouping

• Bolt Catch
• Bolt Catch Plunger
• Bolt Catch Roll Pin
• Bolt Catch Spring
• Buffer Retainer
• Buffer Retainer Spring

Trigger & Hammer Assembly

• Hammer Pin
• Hammer Spring
• Trigger Pin
• Trigger Spring
• Disconnect
• Disconnect Spring

Magazine & Trigger Guard

• Magazine Catch
• Magazine Catch Spring
• Magazine Release Button
• Trigger Guard
• Trigger Guard Roll Pin

Safety Selector & Pistol Grip

• Safety Selector
• Selector Detent
• Selector Detent Spring
• Pistol Grip Lock Washer
• Pistol Grip Screw

Install Instructions

Follow our step-by-step picture and video guide to install your AR-15 Lower Parts Kit. You'll also need some basic tools, like an Armorer's Wrench, and Roll Pin Punches with a Gunsmithing Hammer.

Guide: How to install the AR-15 lower parts kit.

You'll Need a Buffer Tube Kit

In addition to this lower parts kit, you'll need a buffer tube kit to make your lower assembly function with an upper assembly.

Buy a Buffer Tube Kit here.

Completing Your AR Build

With a finish lower receiver, you can either piece together a custom upper, or buy a barreled upper assembly that's ready to go out of the box. Our barreled uppers include high-quality barrels, handguards, and mil-spec bolt carrier groups with charging handles included.

Buy a Barreled Upper Assembly here.