The M45 AEG is a pistol caliber carbine airsoft gun coming from ARES. This follows the latest trends as seen in the real steel world with the popularization of using smaller calibers while still operating an AR patterned firearm.
The ARES M45 not only delivers on providing a compact AEG but also offers itself as an extremely versatile platform for upgrades. The M45S shares much of its flexibility with the M45X and is compatible with many of its accessories unless otherwise specified. However, you will still enjoy the same shooting experience from both guns and have an AEG that is ultra compact and unobtrusive.
The M45 also uses tried and true ARES motors and their E.F.C.S. for optimal trigger performance.