Versa-Pod 180-MZ-251 All Steel Tactical Picatinny Rail Prone Bipod Black. All steel construction designed specifically with the M249 in mind. Adjusts from 7" to 9" fully extended. (1.96 lb 0.89 kg) M251 Tactical Bipod The Heavy Duty has All-Steel construction with rubber feet for proneor bench shooting and a non-quick detach mechanism which means you get one serious bipod. Based on the Model 91 which was designed specifically for the M249 SAW the 251 is just as rugged and sturdy. Attaches to any MIL-STD-1913 rail. The legs extend from 7 inches to 9 inches. Non-Marring Rubber Feet Classic Prone Size Cant Friction Lock All Steel Construction Spring Loaded Legs Specifications for Versa-Pod Model 251 7-9in Heavyweight Picatinny Rail Mounted Prone Bipod w/ Rubber Feet: Manufacturer: Versa-Pod Tripod & Bipod Material: Steel Fabric/Material: 4140 Chrome Moly Steel Height: 7 - 9 in Color: Black Mount Type: Dovetail Package Contents: Versa-Pod Model 251 7-9in Heavyweight Picatinny Rail Mounted Prone Bipod w/ Rubber Feet Versa-Pod 180-251: 180-MZ-251 All Steel Tactical Picatinny Rail Prone Bipod Black