I thought of doing a new brand called Shutoku which literally means Acquisition.
This weapon is fear inducing, but in high demand and praised for its stability, reliability and versatility. The overall length of the weapon is 906mm, with a 471mm barrel and the weapon weighs around 4.7kg. It uses 6.5x39mm rounds, but most other calibers are available. This weapon was designed for the secret service with the purpose of fighting crime on a bigger scale. It was designed by a British man named E. Fawkes. Two other variants of this weapon are currently in production, including a civilian version for self - defense means.
The weapon usually goes by its nickname 'Grado'.
(base inspiration was taken from here https://www.artstation.com/artwork/nY2K36, follow the man, he's hella good!!)