ProMag DRMA104 30-Round Drum Magazine .380 ACP Bersa Thunder 380

The ProMag DRMA104 transforms the Bersa Thunder 380 from a standard capacity pistol into a high-volume platform capable of sustained firing sessions. This 30-round drum magazine eliminates frequent reloading interruptions during training drills and competitive shooting events. Extended capacity magazines like this one provide tactical advantages in scenarios where reload time matters most.

What Makes This Different

Unlike standard stick magazines that typically hold 7-8 rounds, this drum configuration stores 30 rounds of .380 ACP ammunition in a compact footprint. The drum design distributes cartridge weight more evenly than extended stick magazines, reducing stress on the magazine well. ProMag engineers this magazine with steel reinforcement points at critical stress areas, addressing common failure points found in polymer-only designs.

Key Features

• 30-round capacity increases firepower by 375% over standard magazines
• Drum configuration maintains manageable profile compared to extended stick magazines
• Steel-reinforced feed lips prevent deformation under spring pressure
• Impact-resistant polymer body withstands drops and rough handling
• Compatible with all Bersa Thunder 380 variants and generations
• Clear round count window allows visual ammunition monitoring
• Removable base plate enables complete disassembly for cleaning

Range testing shows consistent feeding across various .380 ACP loads, from 90-grain FMJ training ammunition to 95-grain hollow points. The magazine functions reliably in competitive shooting disciplines where sustained fire rates matter. Law enforcement agencies appreciate the extended capacity for qualification courses and tactical training scenarios. The drum's low profile allows prone shooting positions without ground interference.

Technical Specs

• Capacity: 30 rounds .380 ACP
• Construction: Impact-resistant polymer with steel reinforcements
• Compatibility: Bersa Thunder 380 (all variants)
• Weight: Approximately 8.5 oz empty
• Dimensions: 4.2" height x 3.1" width x 1.4" depth
• Finish: Matte black polymer
• Country of Origin: USA
• Manufacturer: ProMag Industries

This drum magazine addresses the primary limitation of .380 ACP pistols in training and competitive environments. ProMag backs their magazines with quality construction standards developed over decades of aftermarket magazine production. Extended capacity magazines like the DRMA104 represent practical solutions for shooters who demand more rounds between reloads.