PSR evaluates the Irregular Design Group Hesy SixK suppressor, a compact accessory intended for use on short-barreled rifles. The device is manufactured using Inconel through a 3D printing process, resulting in a durable build suitable for frequent use. It utilizes a specific mounting interface that involves reverse threads and locking tabs to maintain a stable connection to the firearm.

The evaluation emphasizes the unit's ability to manage sound, flash, and gas blowback. During live-fire testing on multiple barrel lengths, the suppressor demonstrates a capacity to redirect combustion gases away from the operator's face. Although a visual signature is present during the initial shot, the device reduces flash for subsequent rounds and provides a distinct acoustic profile.

PSR also discusses the integrated rifle components used during the review, such as textured grips and modified safety systems. Observations indicate that the suppressor does not substantially alter the rifle's operating speed and helps protect the user's hearing and lungs. He ends this episode by discussing the cost and practical application of the hardware in various shooting environments.