ATI Omni Hybrid Maxx – Multi-Cal Complete Polymer Lower Receiver (Pistol)

The ATI Omni Hybrid Maxx lower receiver is a lightweight, reinforced polymer AR-15 lower that delivers strength and durability at an affordable price. Built with ATI’s patented Omni Hybrid technology, it combines a steel-reinforced buffer tube housing with a polymer body, ensuring enhanced durability in high-stress areas while maintaining a reduced overall weight.

This model is a complete lower configured as a pistol receiver, making it a versatile foundation for custom AR pistol builds chambered in 5.56 NATO or other AR-15 compatible calibers. It comes equipped with a mil-spec fire control group, polymer pistol grip, and standard safety selector, ready for an upper receiver of your choice.

Ideal for builders who want a budget-friendly, yet strong and reliable lower, the Omni Hybrid Maxx is a proven option for modern AR projects.

Specifications