KAK AR-15 Basic Build Lower Parts Kit
Not Yet Rated | Write the First Review SKU: 222-KAK-AR15-LP-KT-02
UPC: 811163000000
MFG#: AR15-LP-KT-02

AR-15 Basic Build Lower Parts Kit – KAK Industry Mil-Spec Quality Without the Guesswork

Building your AR-15 lower? You don’t need fluff. You need dependable, mil-spec parts that fit right, function right, and keep your rifle running smooth. That’s exactly what you get with the KAK Industry AR-15 Basic Build Lower Parts Kit.

This kit covers all the essentials—fire control group, pins, springs, and hardware—for your AR-15 lower receiver. No oversized selectors. No unnecessary extras. Just the solid, American-made parts that make up the core of your lower build.

What’s in the KAK Basic Lower Parts Kit?

• Mil-Spec AR-15 Fire Control Group (trigger, hammer, disconnector)
• Trigger and Hammer Springs
• Pivot and Takedown Pins + Detents
• Selector (Safety) with Spring and Detent
• Bolt Catch Assembly
• Magazine Catch, Spring, and Button
• Buffer Retainer and Spring
• Mil-Spec Grip with Screw and Washer

Simple. Functional. Reliable.

Why Choose KAK Industry’s AR-15 Lower Parts Kit?

• Made in the USA
• Perfect Fit for Mil-Spec AR-15 Lowers
• Budget-Friendly Without Cutting Corners
• Great for First-Time Builds or Spare Parts

Whether you're piecing together your first AR or keeping spares on hand for field repairs, this kit keeps things straightforward. Every component is built to spec and ready to drop in.

✅ Quick Specs:

• Mil-Spec Standard
• Compatible with AR-15 Platforms (5.56, .223, etc.)
• Finish: Black Phosphate & Anodized Steel Hardware
• Grip: Standard A2 Style

📦 What's Not Included:

• No trigger guard

• No buffer tube, stock, or pistol grip other than the standard A2

If you’re looking for a fully loaded lower build kit, check out our enhanced kits or complete lower parts bundles.

Looking for more parts to finish your AR-15 build?

✅ Browse our full selection of AR-15 Lower Parts Kits.
✅ Complete your lower with a Buffer Tube Kit.
✅ Upgrade your fire control group with one of our AR-15 Triggers.
✅ Check out all our AR-15 Accessories today.

Frequently Asked Questions (FAQ)

Q: Does this kit include a trigger guard?
A: No, this is a basic kit focused on the essential internal lower parts. It does not include a trigger guard.

Q: Is this compatible with AR-10 lowers?
A: No, this kit is specifically for AR-15 lowers. AR-10 platforms require different dimensions and parts.

Q: Are these parts made in the USA?
A: Yes. All components in this kit are manufactured by KAK Industry in the United States.

Q: Is the grip included in this kit?
A: Yes. The kit includes a standard A2-style black polymer pistol grip with screw and washer.

Q: Can I use this with polymer lowers?
A: While it’s designed for mil-spec aluminum lowers, many users report successful installs in quality polymer lowers. Fit may vary slightly.