M67

The M67 Defensive Fragmentation Grenade is the standard hand grenade used by both the U.S. Military and various forces around the world. Its baseball-like shape was designed to aid in throwing the weapon. The weapon has a 5-second fuse upon triggering. Also known as HE (High Explosive) or Fragmentation (Frag) Grenades, these are the most common indirect weapon of attack among troops. Grenades have the military slang name of 'pineapples' due to the similarly-shaped WWII-era grenades, but even though the M67 no longer adopts this design, the name has since stuck. England and some other coutries still keep the 'pineapple' design grenades.

Counterterrorist teams only use these in situations wherein there are few to no civilians or hostages and are pinned down by enemy firepower. It is standard SOP for room clearing to toss in either a Flashbang or HE grenade in before entering, in order to stun or injure opponents hiding inside.