Below is a post about the MK32 concussion grenade and feed back from SOG Green Berets on it’s use.

The MK3A2 offensive hand grenade, commonly referred to as the concussion grenade, is designed to produce casualties during close combat while minimizing danger to friendly personnel. The grenade is also used for concussion effects in enclosed areas, for blasting, and for demolition tasks. The shock waves (overpressure) produced by this grenade when used in enclosed areas are greater than those produced by the fragmentation grenade. It is, therefore, very effective against enemy soldiers located in bunkers, buildings, and fortified areas.(1) Body. The body is fibre (similar to the packing container for the fragmentation grenade.)(2) Filler. The filler has 8 ounces of TNT.(3) Fuse. The fuse is an M206A1 or M206A2.(4) Weight. The grenade weighs 15.6 ounces.(5) Safety clip. The MK3A2 may be issued with or without a safety clip.(6) Capabilities. The average soldier can throw this grenade 40 meters. It has an effective casualty radius of 2 meters in open areas, but secondary missiles and bits of fuse may be projected as far as 200 meters from the detonation point.(7) Colour and markings. The grenade is black with yellow markings around its middle.

I made field expedient ones from blocks of TNT and grenade fuses. I only used the issue ones to discourage swimmers or for fishing!

The covers were made with asbestos. That is why they were phased out.

I never encountered this grenade model during my CCC years (1969-1971). Doesn’t strike me as something that the RTs would have found overly useful..

Nor I, CCC 67-68.

I don’t remember them looking like this, but it has been a few years, We used them down at 1-0 school to teach prisoner snatches. One time I played the prisoner, I was a bit to close and screwed up my right ear…

Remember the C-4 with the peal and stick adhesive on one side? I think it was about a half a normal amount of C-4, and half as thick as normal. I made “concussion” grenades with those. I felt the added versatility was better – concussion/demo/etc… And having C-4 for small fires(C rats heating) …. 🤓 One thing I never tested was if a bullet (M-16) would set off C-4. And one thing I never wanted to test was if a piece was burning, would stomping on it, set it off. My friend, during the SFOC course were in the Officer BOQ. He came in off the field with a small lump of C-4. He stuck it on the end of a coat hanger and lit it. Oooo cool. Then started to put it out by stomping on it. I thought this was a VERY bad idea and stopped him. But never found out what would have happened.


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