This cartridge is a high explosive round designed to inflict personnel casualties using air burst effect, and is fired from 40mm Grenade Launchers M79 and M203 (attached to the M16 series rifle).

M397 跳炸榴弹全长4.05英寸（103mm），重0.51磅（231g），战斗部装药32克OCTOL炸药，采用 M536 跳炸引信，引信前部有少量抛射药，传爆管有延时药。 当弹体着地时， 会引爆引信前部的抛射药，使榴弹上抛约 5英尺 （约1.5m）左右再引爆战斗部的炸药，产生破片杀伤效果，其致命杀伤半径为5m。 弹壳为 M118 型，发射药为330毫克的 M9，最大射程400m，初速76m/s。 左下第一发为M397. M397A1跳炸榴弹. M397A1 为 M397的改进型，在 1974年定型，采用改进过 …

40×46 mm types include the M397A1, M433, M463, and the newer M1060. The M397 is a pre-set airburst munition, designed to allow grenadiers to engage targets in trenches and behind cover. It features a bounding charge that is detonated by ground impact.

EFFECT – Ejection of fragmentation body at point of impact to 1.52 m (5 foot) altitude. Blast and fragmentation after secondary (auxiliary) fuze delay.

This document provides information on the M397A1 40mm high explosive cartridge used in grenade launchers. It consists of a steel projectile body with a metal rotating band and cartridge case containing a propelling charge and primer. A hollow steel ball assembly containing an explosive bursting charge is fitted into the rear of the projectile.

2010年2月25日 · The M397A1 cartridge is a high explosive round designed to inflict personnel casualties using air burst effect. The M397A1 functions with improved performance on snow targets in comparison to the performance of the M397 and M406.

2011年7月7日 · The MK 19 fires six types of cartridges: M430I / M430A1 high-explosive dual-purpose grenades, M383 high-explosive grenade, M385I / M918 training practice, and M922/M922A1 dummy rounds.

This cartridge is a high explosive round designed to inflict personnel casualties using air burst effect, an fired from 40mm Grenade Launchers M79 and M203 (attached to the M16 series rifle).

有的，补充下彩云dalao的回答，美国现役的M203A1榴弹发射器曾配有多种40mm低速榴弹，其中就有一种1974年开发的M397A1跳炸榴弹。 原理大同小异，弹头的引信触发后引爆弹跳装药，从弹底把榴弹推高5英尺（约1.5米），延迟引信引爆高爆装药。

这篇文章通过讲解高低压发射原理和这一技术的发展发展起源，全面公开美国现列装的所有的低速榴弹型号的内部结构图，是一篇关于单兵手持发射榴弹的技术汇总文章，值得收藏！ 高低压发射技术. 说到低速榴弹，一个必须要讲的技术是高低压发射原理。 高低压发射原理又称“高低压系统”、“高低推进系统”和“高低投射系统”等，它是一种利用较小的高压室储存发射药的弹药。 当推进剂被点燃时，高压气体通过泄气孔（或端口）排出到更大的低压室，形成减压或后推动弹丸向前运 …