Desert Tech MDRX BLK LBL ALX 20 Handguard Tungsten ACC0285-T. The MDRX ALX 20 is the ultimate upgrade for all MDR and MDRX rifles. Specifications for Desert Tech MDRX BLK LBL ALX 20 Handguard: Manufacturer: Desert Tech Fabric/Material: 6061 T6 Extruded...