For reference, the HK93 is a modernized version of the HK43, a G3-derivative, developed in the mid-’70s and manufactured through the ’80s, chambered for the NATO 5.56 round, although most are marked .223.
The roller-delayed blowback action, as you can see, has no problems extracting cases and flinging them as far away as any rifle could ever possibly hope to do. Because it doesn’t use a gas piston the rifles are remarkably accurate.
And also for reference, the cathode ray tube, or CRT, is an ancient method for families to consume a limited array of broadcast transmissions that used radio carrier waves. These devices were also used in conjunction with magnetic storage cassettes to watch time-shifted content.