GBLS GDR15 / 416 HP Magazine
The new Polymer HP Mag from GBLS is a selectable capacity magazine from 20, 30, 40 and 60rds. Although unadvertised these magazine are capable of taking around 90rds although GBLS don't recommend this.
SPECIFICATION
Material: Mil-Spec PA66+GF30 Polymer Plastic
DAS proprietary design, 20/30/40/60/.. round magazine capacity
Customizable setting
Weight: 186g, 6.56oz
Color: Black.