M26A2 with an impact fuse? In the BB photo, the vaguely baseball cap shaped thing at 10:00 o’clock is the striker, and just above that is the cross section of the cotter pin that is the safety on the grenade. At 11:00 is the cross-section of a heavy metal pin that anchors the coil spring for the striker. This coil spring is the bright ring of metal around the heavy pin. The connection of the striker to the coil spring appears to have been cut. Anyway, with the hand around the grenade, the user pulsl the ring attached to the cotter pin. The “spoon” handle keeps the striker in place as long the user holds the spoon, and once that’s released the rat-trap style spring tosses off the spoon and the striker rotates clockwise (in the photo) to strike the primer at the top of the fuse. The light blue material would be the fuse, The firing pin and spring in the center confused me, but that seems to be a separate impact fuse and detonator. The khaki stuff at the bottom of the fuse would be the booster for the main charge, like a blasting cap. The actual explosives aren’t shown.
http://www.lexpev.nl/grenades/americas/unitedstates/m26a2m57.html
