I agree that bullet trap grenades are desirable, but not for the reason you suggest.
Yep, particularly at night, and especially against light armoured vehicles, *Wheelies* and mech infantry fighting vehicles, giving every rifleman 4 to 6 light rifle-launched grenades, using a derivitive warhead from a 40mm HEDP round or Rockeye bomblet is a useful addition to the 3 or 4 LAWs a rifleman might carry, especially now that we're going back to the SMAW bazooka/RPG launcher equivalent, carried by a dedicated gunner with advanced optics. Having enemy AFV crews know that in addition to that gunner who can kill them through their frontal armor, they have just as serios concerns with their side and rear flanks, as well as the possibility of longer-ranged platoon or company AT weapons to ruin their day.
But at the fire team level those *baby grenades* can have another use, with the development of a light electrically-fired launch cartridge that can be popped with a Claymore clacker. Place the so-loaded AT grenade, nose up, in a foot-deep hole, run the legwire to the command det position, and wait for the hostile vehicle to cross the chokepoint chosen: a bridge approach, intersection, or pass where it has to pass its thinnest belly armor directly over the surprise waiting below. Think of it as a Claymore, but for tracks or tanks, and serve while hot.
If the drivers don't cooperate, no problem; the grenades can still be used as grenades, along with the LAWS or SMAWS, M203s with HEDP, and any other antiarmor weapons handy. The more weapons infantry has to kill armor, especially light armor in close, the better off they are, and the less likely that an effective countermeasure that might defeat one such AT system or reduce its effectiveness will be able to work against all of them.
