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M549A1 (155 mm HERA)
The M549A1 is a US-developed, 155 mm, high explosive fragmentation (HE-frag) rocket assisted (HERA) artillery projectile, which is comprised of two primary sections and a fuze. Construction The M549A1 projectile's two primary sections are; the forward warhead and rear rocket motor. The warhead is constructed from HF-1 high fragmentation steel, whilst the rocket motor constructed from AISI 4340 steel. The warhead section of the M549A1 con...
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