Hughes Rocket Rifle

Hughes rocket rifle is the military monster that motivated Remington to make their Gyro Sniper rifle. Where the Remington uses the space in its 18mm shell for extra fuel and guidance, the Hughes uses a shell almost twice the length for added warhead power. It is a lightweight alternative to the Barrett-Arasaka 20mm. While the Remington's API round is not a fully efficient armor-piercing round in game terms (the extra 1D6 damage merely affects through the armor), the Hughes rifle round uses a shaped charge and is truly armor-piercing. Like all other shaped-charge, D10 rounds, damage penetrating armor is not halved. Ammunition costs 20 eb per round.

Source

 * Home of the Brave, pg.84
 * Blackhand's Street Weapons, pg.31