M67 Grenade

The standard US defensive fragmentation hand grenade since 1961 — a spherical, Composition-B-filled grenade with a 5-meter lethal radius and continuous combat use from Vietnam through Iraq and Afghanistan.

Overview

The M67, formally designated Grenade, Hand, Fragmentation, M67, is a defensive fragmentation hand grenade manufactured by Day & Zimmermann and Nammo for the United States military and its allies. It replaced the M26-series and the iconic Mk 2 “pineapple” in the early 1960s and remains the baseline fragmentation grenade of the NATO bloc. With a spherical steel body, a Composition B filler of approximately 0.18 kg, and the M213 pyrotechnic-delay fuze, the M67 delivers a lethal radius of about 5 metres and a wounding radius out to 15 metres. Over 43 million units have been produced, and current contract prices hover around $45 per grenade, according to Nammo and Day & Zimmermann.

Development

Development of the M67 began in the late 1950s as the US Army sought to replace the bulky, externally-grooved Mk 2 and the transitional M26-series with a more compact, uniform-fragmentation design. The result was a smooth-bodied steel sphere that entered service in 1961, as documented by Weaponsystems.net. The grenade was designed to produce a dense cloud of metal fragments upon detonation, improving lethality over earlier designs while reducing weight and bulk. By the mid-1960s the M67 was standard issue for all US combat forces, and it rapidly spread through NATO and allied nations; Canada adopted it directly as the C13 copy.

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