Mach Sakai does a comprehensive unboxing and review of the C.A.T. Versatile-8 SMG, pointing reviewer highlights its compact size, sturdy build, and lightweight design at just over 2kg. Notable design features include M-LOK slots for customization, a compact charging handle for easy hop-up adjustment, and an ambidextrous bolt release. A key innovation is the interchangeable magazine housing, allowing compatibility with both M4 and AK magazines. The grip is praised for its comfort, and the stock is adjustable with a 20mm rail for further personalization.

In terms of functionality and performance, the Versatile-8 boasts an initial velocity of approximately 86 m/s and a stable muzzle velocity averaging around 86 m/s with 0.2g BBs. The hop-up is easily adjustable, and both front and rear sights can be finely tuned. While the magazine requires a slight pull for removal rather than dropping freely, battery replacement is simple due to the spacious compartment accessed by sliding back the stock. The trigger offers a crisp click and a pull of about 1100g. In the test fire, it demonstrates stable shooting performance and good accuracy, with a rate of fire of approximately 17.5 rounds per second.