Two other key issues were reducing the weapon's weight and increasing the heat resistance of the handguard, which would start to melt after firing too many rounds.
另外两个关键问题是减轻枪械的重量和提高扶手的耐热能力，试射几轮以后扶手便开始融化。
3
This control offers a U-shaped handle with a foam wrist support and side handguard, adding more wrist support than standard right Angle controls for driving comfort.