What features do the M777 guns purchased by India have?

The M777 guns that India recently purchased from the US, weigh almost half of what towed howitzers weigh, and hence, can be easily transported by the Army's helicopters. The 55 mm/39-caliber howitzers have a maximum field range of around 30km. Manufactured by BAE Systems, the guns are used by the US, Australian and Canadian Armies.