the holder is light weight while maintaining the rigid ABS material construction

and therefore can only be used in gearboxes with springs that are rated M100 or less

Thread Direction: H&K 3-lug Design

the lower receiver can accept aftermarket AR15 pistol grips and trigger guards

For TM Hi-Capa

Valken Tango Face Mesh Black Airsoft Sniper Magazine the holder is light weightThe Valken Tango Wire Mesh Mask is a full cover airsoft mesh mask. The Tango mask is the lowest profile and the most comfortable version among the Valken mesh masks. These airsoft full cover mesh masks come with medium weight mesh that protects the nose, and mouth, and comes with both glued and stitched seams for durability. They also come with open cell foam on the nose bridge for padding, and are fully breathable with amazing air ventilation