ASAI One Pro 45

The One-Pro 45 (stylized as onepro.45 or one PRO.45 ) is a semi-automatic pistol chambered in .45 ACP (with some variants in .400 Cor-Bon) and manufactured in Wettingen, (previously Solothurn ) Switzerland. It was at one time imported into the USA by Magnum Research and into Italy by ALGIMEC.