ProMag Saiga 12 Gauge Drum Shotgun Magazine 20 Round Black 1 Pack DuPont Zytel Polymer 20RD. It is constructed of DuPont Zytel polymer with injection molded mag follower and mag spring formed from chrome silicone wire. Specifications for ProMag Saiga 12 Gauge 20 Round Rifle Magazine: Manufacturer: ProMag Color: Black Fabric/Material: Polymer Magazine Capacity: 20 Round Gun Make: Saiga Gun Model: Saiga 12 Gauge Caliber: 12 Gauge Package Contents: ProMag Saiga 12 Gauge 20 Round Rifle Magazine What firearm models does the manufacturer say ProMag Saiga 12 Gauge 20 Round Rifle Magazine is compatible with? The manufacturer says that ProMag Saiga 12 Gauge 20 Round Rifle Magazine is compatible with Saiga 12 GaugeProMag SAIA6-20RD: Saiga 12 Gauge Drum Shotgun Magazine 20 Round Black 1 Pack DuPont Zytel Polymer