The M28 and M29 Heat greandes are the same design except in the fin design the M28 has fins with a round band around them. With the M29 the round band was droped off. Maximum range with this wepon is 150 meters. Practice grenades are painted black or blue with white markings, and HE rounds are OD with Yellow markings.
weight
24oz
length
14.5in
diameter
3in
The M31 HEAT rifle grenade is a PIBD grenade. The grenade is equiped with a piezoelectric crystal in the nose. The M31 is packed with 9.92oz of comp B its Maximum range is 185 meters. Practice grenades are painted blue with white markings and HE models are OD with yellow marking.
weight
25oz
length
16.96in
diameter
2.61in