Bersa Thunder 45 Ultra Compact Pro The Bersa Thunder 45 Ultra Compact Pro is a compact .45 ACP semi-automatic pistol designed around a balance of manageable size, practical features, and reliable performance. Its compact profile makes it well suited for users looking for a .45-caliber handgun in a smaller package. The Thunder 45 Ultra Compact Pro features a lightweight alloy frame, double/single-action operating system, and a corrosion-resistant matte finish. The pistol incorporates an accessory rail for compatible accessories and an ergonomic grip designed for a secure, comfortable hold. A practical choice for those looking for a compact .45 ACP platform with a straightforward design and useful modern features. (L180326A)