Federation Firearms SA-4, 12ga semi-automatic shotgun, M4 Clone, Marine.

The Federation Firearms SA-4 is a 12‑gauge semi‑automatic shotgun designed for reliable performance. It features a dual‑piston gas system that reduces recoil and ensures consistent cycling. The barrel measures 18.7 inches (47.5 cm) for balanced shot distribution. A synthetic adjustable stock provides a comfortable fit for various shooters. The Marine finish offers corrosion resistance and a distinctive appearance. Three interchangeable chokes allow versatility across different shooting scenarios. The shotgun operates with a simple pump‑action lever for quick reloads. Its robust construction is suited for both tactical and sporting use. All components are engineered for durability under demanding conditions. The SA‑4 delivers dependable results for enthusiasts and professionals alike.

Gauge	12 gauge
Barrel Length	18.7 inches (47.5 cm)
Finish	Marine
Stock	Adjustable synthetic stock
Chokes	3 interchangeable chokes
Action Type	Semi‑automatic
Gas System	Dual‑piston