SIMON breach grenade

IDF soldier with a SIMON rifle grenade
SIMON rifle grenade close up (bottom)
Video of U.S. troops using GREM (Simon) rifle grenade system

The SIMON is an Israeli bullet-trap rifle grenade designed to breach through doors, developed by Rafael Advanced Defense Systems. It is intended for use with 5.56 mm rifles such as the M4 carbine.


The system consists of a bullet-trap tail section which slides over the muzzle of the rifle, an explosive midsection and a front standoff rod. The grenade is propelled by a normal ball or tracer round to a maximum range of thirty meters and is detonated by the impact of the standoff rod against the door to be breached, the standoff distance allowing the blast wave to affect as much of the door surface as possible, negating any need to aim for hinges or locks.

A version which is manually attached to the door is also available, known as "static SIMON".[1]



Map with SIMON operators in blue

Current operators[]


  1. ^ "SIMON". Rafael Advanced Defense Systems Ltd.
  2. ^ SIMON Brochure
  3. ^ "M100 Grenade Rifle Entry Munition". Army Magazine. Archived from the original on February 28, 2008.
  4. ^ "US Army Awards for Top 10 Inventions of 2005". Defense Industry Daily. June 26, 2006.
  5. ^ Un membre du GIGN belge raconte un assaut où ils ont tué 2 terroristes !, retrieved 2022-07-04

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