The Mossberg 500 ATI Tactical 12 Gauge shotgun integrates the established performance of the 500 series with enhanced ATI components. This pump-action system is engineered for consistent operation in diverse conditions, addressing the demands of personal defense and competitive shooting applications.
Key Features
Proven 500 Platform
Built on the robust Mossberg 500 action, this platform ensures consistent shell cycling via dual extractors and positive steel-to-steel lockup. The ambidextrous tang safety provides intuitive manipulation for various users. Twin action bars and an anti-jam elevator system mitigate cycling interruptions, optimizing feed reliability under demanding operational conditions.
ATI Tactical Integration
This configuration incorporates ATI firearm accessories engineered for enhanced utility. The adjustable ATI Scorpion stock system allows for precise length of pull customization, facilitating optimal shooter interface and recoil mitigation. A barrel heat shield is integrated for thermal management during extended firing sequences. The attached shell side saddle provides immediate access to supplemental ammunition, minimizing reload times. Integrated accessory rails permit direct mounting of tactical lights, lasers, or other essential implements, expanding operational adaptability. The grey finish provides a distinct visual profile.
Operational Design
The 18.5-inch barrel length maintains a compact footprint, enhancing maneuverability in confined environments while retaining effective ballistic performance for close-to-mid-range engagements. A 5-round capacity balances operational readiness with the shotgun’s compact dimensions, making it a viable instrument for home defense and structured tactical training.
Technical Specifications
- Action Type: Pump Action
- Gauge: 12 Gauge
- Barrel Length: 18.5 inches
- Capacity: 5+1 rounds
- Stock: ATI Scorpion Adjustable Stock
- Finish: Grey
- Safety: Ambidextrous Tang Safety
- Key Features: Dual extractors, steel-to-steel lockup, twin action bars, anti-jam elevator, barrel heat shield, shell side saddle, integrated accessory rails









