The Sentinel Series offers a range of firearms from around 100 years ago, WWI, Prohibition, Great Depression, etc. Each gun model has a mix of accessories that are historically real, purely silly or both. Game or ready, though I expect you to modify them a bit to build yourself the perfect weapon for your perfect project. Reasonably low poly, as I am unpleased with how blocky the super low poly firearms tend to look.
All the nations involved in World War One were desperately searching for solutions to the terrible deadlock of trench warfare. A certain John T. Thompson of the United States envisioned a miniature machine gun, a trench broom, that soldiers could carry with them over no-man's-land to sweep the trenches of enemies with a simple pull of the trigger. His visonary sub-machine gun was developed too late to serve in the Great War, but its revolutionary design captured the attention of many criminals and law enforcement agencies in the tumultous Prohibition and Great Depression eras. The Thompson SMG was an incredibly expensive gun, almost as much as a new car at the time, so despite its iconic reputation, it would have been a symbol of only the most well funded cops and robbers. As a new global loomed over the horizon, the US Army adapted its own cheaper version of the iconic gangster gun, the M1-Thompson. In its military role, the Thompson was prized by special forces units like commandos, paratroopers and tankers for its compact yet hard-hitting ability. The Thompson continued to see sporadic use around the world during the Cold War, especially in close quarters urban or jungle combat, but by then, fully automatic rifles and more modern SMGs had largely replaced it.
As such a long lived and beloved gun, there were a lot of real life variations out there, but I couldn't help myself from making a few silly versions of this timeless classic.