Colion Noir goes over the B&T APC9 PRO SD if it is the better SMG than the MP5SD in this video...."I know it’s cliche to call any modern pistol caliber carbine the next MP5 killer but look at it more as a testament to the fact that the MP5 provided the best foundation you could ask for to build modern pistol caliber carbines on, like the B&T APC9 Pro SD.

This is the most refined version of a pistol caliber carbine I’ve ever had the privilege of shooting.