ATI Omni Hybrid Maxx – Multi-Cal Polymer Lower Receiver (Pistol)
ATI Omni Hybrid Maxx multi-cal AR-15 pistol lower with reinforced polymer design. Complete lower with fire control group and grip. Lightweight, durable, and affordable foundation for AR builds.
Description
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 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
| Specification | Detail |
|---|---|
| Manufacturer | American Tactical Imports (ATI) |
| Model | Omni Hybrid Maxx |
| Type | Pistol Lower Receiver |
| Caliber | Multi-Caliber (5.56 NATO, .223 Rem, etc.) |
| Material | Hybrid Polymer w/ Reinforced Steel Inserts |
| Finish | Black Polymer |
| Fire Control | Mil-Spec, Semi-Auto |
| Safety Selector | Standard Marked “Safe / Fire” |
| Grip | Polymer Pistol Grip |
| Compatibility | Standard AR-15 Uppers |
| Serial Number | NS333292 (visible in photos) |
Product Highlights
| Brand | American Tactical ATI |
| Model | Omni Hybrid Maxx |
| Condition | Used |
| SKU | NS333292 |
Additional information
| Model | Omni Hybrid MAXX |
|---|---|
| Manufacturer |

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