Which 20 mm round carries the M505 point-detonating fuze?

The 20 mm round that carries the M505 point-detonating fuze is the High-explosive incendiary (HEI) round. This type of round is designed to explode on impact, allowing for effective engagement of both personnel and material targets. The M505 fuze is specifically crafted for this purpose, ensuring a reliable detonation upon contact with the target.

HEI rounds contain a combination of explosive filler and incendiary materials that not only create a substantial blast effect but also generate incendiary effects capable of igniting fuel and other combustible materials on the target. This dual functionality makes HEI rounds particularly versatile and effective in various combat scenarios.

In contrast, the other types of rounds listed do not utilize the M505 fuze. For example, Armor-piercing incendiary (API) rounds are designed primarily to penetrate armor and usually do not employ point-detonating fuzes. Target practice (TP) rounds are generally inert and used for training purposes, lacking any explosive or incendiary capability. Frangible (FRAG) rounds are intended to disintegrate upon impact, minimizing ricochet and collateral damage, and also do not utilize point-detonating fuzes.

Therefore, understanding the specific characteristics and intended purposes of each