Mesa Tactical Truckee Forend w/Rail Mossberg Model 590 Shockwave 12 Gauge M-LOK 8.75 in Black. All Truckee forends have industry standard M-LOK slots that run along both sides and the bottom of the forend. Specifications for Mesa Tactical Truckee Forend: Manufacturer: Mesa Tactical Color: Black Fabric/Material: 6061-T6 Aluminum Gun Rail: M-LOK Weight: 0.5 lb Condition: New Mount Type: M-LOK Gauge: 12 Gun Type: Shotgun Features of Mesa Tactical Truckee Forend Machined from a single piece of aluminum and uses high temperature glass-filled nylon end caps for durability. Industry standard M-LOK slots make attaching accessories like lights slings and grips easy. No small screws that could fall out and be lost. No tools required for installation or removal. Lifetime warranty. Package Contents: Mesa Tactical Truckee Forend Forend wrench What firearm models does the manufacturer say Mesa Tactical Truckee Forend is compatible with? The manufacturer suggests that Mesa Tactical Truckee Forend is compatible with Remington Model 870 Mossberg Model 590 Shockwave Mossberg Model 500 Mossberg Model 590Mesa Tactical 95580: Truckee Forend w/Rail Mossberg Model 590 Shockwave 12 Gauge M-LOK 8.75 in Black