First AR-15 Build: Complete Upper + Complete Lower
Best for: A first-time builder who wants to choose the features that matter most without assembling an upper receiver from individual parts.
Start by selecting a compatible AR-15 complete upper and complete lower. Then confirm what is included and add the remaining essentials for your intended use.
Build in Three Steps
1. Choose a Complete Upper
Select the chambering, barrel length, handguard style, and intended use first. Before adding it to your cart, confirm whether the listing includes a bolt carrier group and charging handle.
2. Choose a Complete Lower
Choose an AR-15-pattern complete lower that fits your intended configuration. Confirm the stock or brace setup, trigger style, and all applicable federal, state, and local requirements before ordering.
3. Add the Essentials
- Magazines matched to the selected cartridge.
- Sights or an optic and a compatible mount.
- Eye and ear protection, safe storage, and any tools or accessories appropriate for your planned use.
Confirm Before Ordering
- The upper and lower are both standard AR-15 pattern; do not mix AR-15 and AR-308/LR-308 components.
- The upper’s chambering matches the magazines and ammunition you plan to use.
- The complete upper listing confirms whether a bolt carrier group and charging handle are included.
- The barrel length and selected configuration comply with all applicable laws where you live.
Need more detail? Use the AR-15 Parts List and Compatibility Checklist.