Mesa Tactical Remington Model 870 SureShell Aluminum Carrier and Saddle Rail w/Mag Clamp 6-Shell 12 Gauge 20 in Black. Mesa Tactical offers multiple custom configurations and material choices. The Long Sure-Shell Carrier System is available in either Aluminum or Polymer yokes and with or without magazine clamps. Please view choices below. Specifications for Mesa Tactical SureShell Aluminum Carrier and Saddle Rail: Manufacturer: Mesa Tactical Color: Black Gun Model: Remington Model 870 Gun Make: Remington Package Contents: Mesa Tactical SureShell Aluminum Carrier and Saddle Rail includes necessary hardware What firearm models does the manufacturer say Mesa Tactical SureShell Aluminum Carrier and Saddle Rail is compatible with? The manufacturer suggests that Mesa Tactical SureShell Aluminum Carrier and Saddle Rail is compatible with Remington Model 870Mesa Tactical 92130: Remington Model 870 SureShell Aluminum Carrier and Saddle Rail w/Mag Clamp 6-Shell 12 Gauge 20 in Black