A low profile and slim pistol grip that can fit most 7.4v or 11.1v 1100mAh STICK TYPE lipo batteries. May probably fit 1200mAh variant too, dunno go try it yourself.

Specs:

Storage size: 100 x 21 x 16mm

Meant for picatinny rails

Mlok or Keymod adapter may needed to fit on other handguards