Panzer Arms M4 Speed Pro 12 Gauge 5+1 18.5" Ported FDE Scorpion Camo with Titanium Accents The Panzer Arms M4 Speed Pro brings a ported 18.5-inch barrel, an aluminum receiver, and FDE Scorpion Camo with titanium accents together in a semi-automatic 12 gauge shotgun. Its 3-inch chamber and 5+1 capacity identify the configuration, while the patterned finish gives the receiver and furniture a distinctive appearance. The barrel porting is a physical feature of the barrel itself; it is part of the Speed Pro configuration rather than a separately described muzzle accessory. The receiver has a Picatinny rail, providing an established mounting interface for compatible sighting accessories. An M-LOK handguard supplies a separate accessory interface along the forend, so the shotgun combines two clearly identified mounting systems. These details matter when selecting accessories: receiver-mounted equipment uses the Picatinny interface, while compatible handguard accessories use M-LOK. The FDE Scorpion pattern and titanium accents give the shotgun its defining appearance, while the rail-equipped receiver and M-LOK forend establish its accessory layout. Key Features Ported barrel: An 18.5-inch barrel with porting is part of the Speed Pro configuration. Picatinny receiver rail: Provides a mounting interface for compatible sighting accessories. M-LOK handguard: Offers an accessory interface on the forend. Distinctive finish: FDE Scorpion Camo is paired with titanium accents. Specifications Manufacturer: Panzer Arms Model: M4 Speed Pro Gauge: 12 Gauge Action: Semi-automatic Chamber: 3 inches Barrel Length: 18.5 inches; ported Capacity: 5+1 Receiver: Aluminum with Picatinny rail Handguard: M-LOK Finish: FDE Scorpion Camo with titanium accents Shop the Panzer Arms M4 Speed Pro FDE Scorpion Camo 12 gauge shotgun at BattleHawk Armory.