
And here is another shot showing a casing in the chamber, and the unsupported space around it - and with another casing held in the breechblock, showing the holes in the casing that allowed the gases to escape into the chamber and thus blow out the venturis while pushing the round down the barrel.
And just to cap it off - this product was made by Firestone, that well-known manufacturer of ordnance...



Nice toy!
"Firestone" would appear to me to be a wonderful name for an ordnance manufacturer.
Put up a few at my place. Lemeno whatcha think.
The English Wiki article does not make much of Kroeger and Musser's efforts.
Cheers
The *other* place you don't want to be is around the *other* end.
We got debriefed on the Grenada Op in '83 by one of the RW participants. It seems two squads of Marines had just finished bouncing several LAWs off a BTR-60 that was making itself obnoxious on a dirt road traversing a hillside when three Rangers toting an M18 popped out of the brush and onto the scene.
*boompf!*
Punched a hole right through the front of the BTR, traveled through the crew and passenger compartments and exited through the rear (also armored) door. The Rangers re-shouldered the M18 and continued up the hill.
The Marines modestly declined to address the incident in the AAR aboard the Guam...