The M4 Built Lower Receiver - a premium firearm component crafted from 7075 Forged XM15-E2S Lower Receiver. With a weight of just 2 LBS, it boasts a 6 Position Buffer Tube, M4 Carbine Stock, A2 Pistol Grip, and Mil-Spec Trigger. Proudly made in the USA , this receiver is the perfect addition to any firearm enthusiast's collection.
| Series | Lower Receiver |
| Model | M4 Built |
| Caliber | Multi |
| Grip Type | A2 Pistol Grip |
| Receiver Material | 7075 Aluminum Alloy |
| Stock Description | BFI M4 Carbine Stock |
| Trigger | Mil-Spec |
