Surveillance/Environmental Test of Grenade, Hand, Riot, CS, M7A3.

This test was conducted by the U.S. Army Arctic Test Center, Fort Greely, Alaska Yuma Proving Ground, Yuma, Arizona Edgewood Arsenal, Maryland and the U.S. Army Tropic Test Center, Fort Clayton, Canal Zone. Testing was conducted for approximately 5 years at each site. To determine the effect of long-term environmental storage on the M7A3 grenade. At the desert and temperature sites, the performance of the grenade met all the desired requirements and did not change significantly during the 5 years of storage. At the arctic site, the ignition lag time was observed to be significantly greater at the end of 5 years of storage. Excessive smoke emission time time smoke was emitted under pressure was observed during all tests conducted at the arctic and tropic sites however, the length of emission time did not appear to change with increase of storage time.