5D Tactical brings you the precision CNC machined AR-15 upper and lower set that offers superb strength and versatility for your next AR build project. We provide firearm enthusiasts in California the capability to quickly and easily finish their custom AR-15 builds with our range of innovative parts including upper receivers and 80% lower receivers. Our forged M4 flat top matched receiver set takes the guesswork out of your next build.
Built for Superior Performance
Our 5D Tactical team brings years of expertise into firearm product design and development, ensuring that you get only the best custom AR build parts at the most competitive prices. Our Forged M4 flat top AR-15 upper and lower matched receiver set is built for superior performance ensuring a perfect fit and simplicity in use.
- CNC machined from 7075-T6 Forged Aluminum
- High-quality Type III Class 2 hard coat anodized finish
- Machine-engraved T-markings - Upper
- FIRE/SAFE safety selector engraving - Lower
- Lower receiver accepts all Mil-Spec parts
- Forged upper accepts Mil-Spec Forward Assist and Ejection Port Door
- Pre-milled rear shelf, broached magazine well and open trigger guard - lower
Our AR-15 upper and lower set is carefully machined to ensure the best performance and serves as a great foundation for a quality AR-15 rifle. For a truly AR-15 custom build, pick up our matched upper and lower receiver set from 5D Tactical.
Order Quality Custom AR-15 Build Parts
At 5D Tactical, we carry a variety of AR-15 parts to help you complete your next build such as upper receivers, 80% lowers, universal jigs and other parts. With our experience, capability, innovative technology and extensive product line, you’re assured of finding the best equipment you need for building your AR-15 rifle.
To get started with your AR-15 build, order our universal router jig, matched AR-15 upper and lower set and tools straight from our online store or call us today at