The Anderson Manufacturing AR-15 Premium Lower Parts Kit with Pistol Grip (brand part no. G2-K421-A000-0P) supplies every small part needed to finish an AM-15 lower receiver, built around a stainless steel hammer and trigger for smoother, longer-wearing operation than standard mild-steel parts. Anderson Manufacturing packages the kit with an A2-style pistol grip and all the springs, pins, detents, and small components a builder needs, so there is no separate parts run to complete the build. Home builders and armorers assembling a lower from a stripped receiver get a single, complete kit instead of sourcing dozens of individual pieces.

Key Specifications

• Includes a stainless steel hammer and trigger for smoother, more durable operation than standard mild-steel parts.
• Ships with an A2-style pistol grip, along with the grip screw and lock washer.
• Covers the full fire control group, including the disconnect, selector, and their springs and detents.
• Includes the bolt catch assembly, magazine catch assembly, and takedown and pivot pin detents with springs.
• Supplies the trigger guard and its roll pin, plus the buffer retainer and spring.

Frequently Asked Questions

What receiver is this kit built for? Anderson’s AM-15 lower receiver.

Does the kit include a pistol grip? Yes, an A2-style grip with its screw and lock washer.

What hammer and trigger does it use? A stainless steel hammer and trigger.

Buy the Anderson Manufacturing AR-15 Premium Lower Parts Kit

Finish your lower build with one complete kit instead of a dozen separate small-parts orders. Order the Anderson Manufacturing AR-15 Premium Lower Parts Kit from our Lubbock, Texas gun shop for fast, insured shipping. Anderson Manufacturing builds these parts to a consistent standard, and this kit is a smart addition to any AR lower parts kit build.