Built-in rechargeable battery. This Gmconn GM1038 is powered by a built-in battery which is rechargeable through the magnetic USB charging port at the bottom of the sight. Compared to the traditional micro USB charging port, this
Ultra lightweight and compact. Super slim and wide angle design allows Gmconn GM1038 to fit in most holsters which is convenient for concealed carry.
Three Screw Holes to Fit Different Rail: The adjustable mount has 3 screw holes but only ONE screw, choose one of the three holes and use the screw to secure the unit on the rail. To use this product, your gun must have the Picatinny rail.
Attachable to rail-equipped handguns, long guns, and shotguns, this laser sight is compatible with almost any firearm that has a contemporary (M1913 Picatinny or Weaver-style) accessory rail.
Picatinny rail. Controlled by ambidextrous switch, easy to turn on and turn off.