First off , greatest flashlight , not only be it bright but it could hypothetically be use to beat -lrb- up -rrb- a burgler , who would be blind by its light ... the mount cradle have a nice easy-in - but firm-holding mechanism , so you just slap it in , but have to use a good level of leverage when you remove it .  it do not come with a extra bulb in the base of light , like many mag do . and , the bulb be not the normal maglight battery , it be a differnt connector and voltage -lrb- 6v -rrb- . I drop mine , which kill my bulb , so I then buy two bulb for it and put one in the spare compartment under the battery spring in the base , where a spare should belong upon purchase . my recommendation be that you buy the extra bulb before you need it , and put it in the base .  it really be great to have this flashlight mount in my storage room always there for I . I would eventually like to get a 2nd to mount in my car for safety etc , and find a good place to mount it -lrb- it come with 12volt car plug adapter too -rrb- .