An injection device 1 for the delivery of medicament comprises a housing 10, a plunger 40 formed from two telescopic sections 42 48 slidably mounted within the housing, an actuation mechanism 30 to move the plunger 40 relative to a syringe 20, an indicator element 50 responsive to the forward movement of the plunger 40 and providing an audible and/or tactile and/or visual indication when the plunger reaches or approaches its forward position. The actuation mechanism 30 acts on the plunger 40, in use, to expand the telescopic sections and to sequentially move each of the sections forward within the housing. The indicator element 30 is responsive to the forward movement of the trailing telescopic section 48. The indicator element is preferably biased into the indicator position and is held in the retracted position by the plunger, the noise or tactile indication being caused by the impact of the released element. The indicator may be a moving shuttle (254 Fig 2) which may enter a window (246 Fig 2) for the visual indicator. Also claimed is a telescopic plunger for an injection device and having an abutment surface.
