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Build Kits
Staged AR15 Lower Parts Kits for Every Build
White Label Armory's Build Kits category gathers American-made, mil-spec AR15 lower parts kits for builders working on AR-15 platform projects. The lineup includes staged options for different points in the assembly process, from the Stage 1 Builder's Essentials Kit through the Stage 5 Complete kit, plus the Assembler Special and a lower parts kit without a fire control group. A pistol caliber lower parts kit with a phosphate finish is also available for PCC-style builds.
These kits suit first-time builders assembling a single lower as well as experienced gunsmiths and manufacturers sourcing components in volume. When choosing, consider which stage matches your build, whether you need a standard AR15 or pistol caliber configuration, and the phosphate finish offered across the kits.
Pair a kit with a stripped receiver and round out your build with triggers. Review each product page for the specific components included before ordering.
What this category includes
- Staged AR-15 lower parts kits from partial to complete configurations
- AR-15 rifle and pistol caliber carbine (PCC) blowback options
- Mil-Spec lower receiver dimensions throughout
- Phosphate-finished metal components
- Kits with or without fire control group, grip, and trigger guard
- Included components vary by stage \u2014 hammer and bolt catch on select kits
- Made in the USA
Frequently Asked Questions
This category offers lower parts kits in staged configurations, including Stage 1 through Stage 5 and a Complete option. Stages differ in how many components are included, such as the Stage 4 kit with No Fire Control Group. Review each product listing to match the kit contents to what your build still needs.
It depends on the kit. Some staged options include the fire control group while others, like the Stage 4 kit, are specifically listed as No Fire Control Group. Check the individual product title and description to confirm which components are covered before ordering.
The kits in this category are offered with a phosphate finish, as noted in the product names. If you need a specific configuration, confirm the finish and contents listed on the individual product page before adding it to your cart.
Yes. This category includes the AR15 Pistol Caliber Lower Parts Kit in a phosphate finish. Review its product listing to confirm the included components match your pistol caliber build's requirements.
These are lower parts kits, so you supply the receiver separately. You can browse available options in our Receivers category and confirm compatibility with your intended build before assembly.
White Label Armory ships orders within 2-3 business days. Free shipping is available on qualifying orders. You'll find shipping details applied at checkout based on your order.
Build on.
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