Section VI
No. 12
A simple modification can produce delays of approximately 20 seconds for grenades when fired from Grenade Launchers (Section IV, No. 5).
MATERIAL REQUIRED:
- Grenade Nail
- “Strike-anywhere” matches, 6 to 8
- Pliers (may not be needed)
- Knife or sharp cutting edge
- Piece of wood
- Safety fuse
NOTE: Any safety or improvised fuse may be used. However, since different time delays will result, determine the burning rate of the fuse first.
PROCEDURE:
1. Unscrew fuse mechanism from body of grenade and remove. Pliers may have to be used.
2. Insert nail completely through safety hole (hole over primer).
3. Carefully remove safety pin pull ring and lever, and allow striker to hit nail.
CAUTION: If for any reason, striker should hit primer Instead of nail, [detonator will explode after (4-5 sec.) delay time.
4. Push pin out and remove spring and striker. Remove nail.
5. Carefully remove top section of fuse mechanism from bottom section by unscrewing. Pliers may have to be used.
CAUTION: Use extreme care - sudden shock may set off detonator.
6. Fire primer by hitting nail placed against top of it. Remove fired primer (same as procedure 5 of Section VI, No. 11).
CAUTION: Do not hold assembly in your hand during above operation, as serious burns may result.
7. Scrape delay fuse powder with a sharpened stick. Loosen about 1/4 in. (8 mm) of powder in cavity.
8. Cut off tips (not whole head) of 8 “strike-anywhere” matches with sharp cutting edge. Drop them into delay fuse hole.
9. Place safety fuse In delay fuse hole so that it is flush against the match tips.
IMPORTANT: Be sure fuse remains flush against the match tips at all times.
10. Thread fuse through primer hole. Enlarge hole if necessary. Screw modified fuse mechanism back together. Screw combination back into grenade. Grenade modification is now ready for use. Light fuse when ready to use.
NOTE: If time delay is used for Improvised Grenade Launchers (Section IV, No. 5) .
1. Wrap tape around safety fuse.
2. Securely tape fuse to grenade
3. Load grenade in launcher. Grenade will explode in approximately 20 seconds after safety fuse burns up to bottom of grenade.
