Springfield Armory continues to improve upon its own designs by creating variations of established and successful models, the newest being the XD-S 4.0 in .45 ACP. The XD-S 3.3 in .45 ACP, introduced in 2012, put Springfield center stage in the race to create the world’s smallest production .45 ACP semi-automatic. From that platform the company introduced a 9mm version and, this past January, a new 4.0 model also chambered in 9mm. The next logical step was to offer the XD-S 4.0 in the heavy-hitting .45 ACP caliber.
The Springfield Armory XD-S 4.0 .45 ACP is currently not available for shipping. Dates will be released in the future.