spike grenade

http://www.bungie.net/News/TopStory.aspx?link=rawr

Excerpt from long-term, in-field interview with the soldiers of E2-BAG/1/7.

Type-2 Antipersonnel Fragmentation Grenade

Official designation: Type-2 Antipersonnel Fragmentation Grenade
Length (o/a): 91.4 cm (36 in.)
Weight: 1.93 kg (4.25 lbs)
Filler: Unknown
Killing radius: 3 meters (10 ft)
Casualty radius¹: 11 meters (36 ft)
Unit Replacement cost: N/A

Description:

The Type-2 is the standard antipersonnel fragmentation grenade of the Covenant heavy infantry. It resembles the early 20th century Model 24 Stielhandgranate superficially, which has lead to it being called “potato masher�. It has also acquired the monikers “spike grenade�, “table leg�, and “nail bomb�.