The Bersa Thunder Magazine is a standard factory replacement magazine. This magazine is for Bersa Thunder models chambered in .380 ACP and holds 8 rounds of ammunition. It is made of steel and is made to Bersa's specifications and tolerances, using the same manufacturing and materials as the original equipment magazines, ensuring perfect fit and operation. This magazine is compatible with Bersa .380 ACP Pistols with serial numbers starting with letter C or higher. Palmetto State Armory has the widest selection of firearms, firearms accessories at great prices!