MKIII
Weight- 15oz.
Height- 3.75in.
Filling- BP
Igniter-???
Delay- 5sec.
MKIIIa1
Weight- 11oz.
Height-???
Filling- TNT
Igniter- M6A2
Delay- 4-5sec.
MKIIIa2
Weight- 15.6oz.
Height- 5.35in.
Filling- TNT
Igniter- M6A2, M206A1, M206A2
Delay- 4-5sec.
MKIII

The MKIII offensive grenade is made of a laminated cardboard material. There were over 5,359,000 of these grenades produced during WWI, but only about 173,000 were sent overseas. Early models were painted gray or had a gray stripe around them. The later model MKIII grenades were painted yellow with black markings.

MKIIIa1

The MKIIIa1 offensive grenade was produced during  WWII. The laminated cardboard body stayed the same, but the the ends were mode of stamped sheet metal. The troops found this greande worked very well for destroying enemy eqquipment as well as the intended purpase. The grenade is painted black with a yellow paper label that includes the type, model, lot #, & date of manufacture.

MKIIIa2

The MKIIIa2 offensive grenade is made of a asphalt impregnated fiber board. The grenade is a 2 peice construction which made the the ends so curved you could not launch it with a M2 launcher. The body is painted black with yellow stecaling.