A high-capacity magazine for a .45 ACP caliber firearm typically holds a significantly larger number of cartridges than standard magazines. This type of magazine utilizes a cylindrical design, often resembling a drum, to achieve this increased capacity. A common example holds fifty rounds of ammunition.
The primary advantage of such a large-capacity magazine is a substantial increase in firepower before reloading becomes necessary. This can be advantageous in certain competitive shooting disciplines or tactical situations. However, these magazines are often heavier and bulkier than standard capacity magazines, potentially affecting weapon handling and maneuverability. Historically, high-capacity magazines have been subject to varying legal restrictions in different jurisdictions.