Does Stormtrooper Carapace have any integral gear to it? I seem to remember them having rebreathers, micro-beads, and photo-visors, but there's nothing in the core book about this.

You were looking at the Karskin from Hammer of the Emperor.

If you want a custom regiment, you have to design the carapace yourself I guess.

Ryza Pattern Stormtrooper Carapace Armour is the armour worn by the Tempestus Scions, more commonly known as "Stormtroopers", as standard.

The armour retains the 6 ALL armour rating of regular Stormtrooper armour as detailed within the official Only War Core Rulebook.

The armour contains a number of features, as listed in Codex Militarum Tempestus.

Mounted on the left wrist is a Dextera Configuration Slate Monitron, a device which allows a Scion to monitor his lifesigns, or those of his subordinates in the case of a Tempestor.

The Omnishield Helm features an integrated Respmask Array and Occulum. When sealed and actively engaged, the Respmask allows the Stormtrooper to operate in airless environments for a limited time, whilst the Occulum compensates for low-lighting and occluded conditions.

The Monoscope doubles as both a focused light beam and Vid Relay, used to feedback visual information to the Stormtrooper's superiors. It is common practice for a Stormtrooper who obscures the view of his monoscope deliberately to be subjected to intensive electro whipping.

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This is copied from my thread "The Tempest". I just sub these additions onto the existing statblock as it works, but is incomplete.

Many regiments come with microbeads, photovisors, respirators, and the like. I just rule that these are integrated into the helmet, when such a thing would make sense (i.e. Janissaries, drop troops, storm troopers).

Many regiments come with microbeads, photovisors, respirators, and the like. I just rule that these are integrated into the helmet, when such a thing would make sense (i.e. Janissaries, drop troops, storm troopers).

Isn't helmet augmentations a thing in the inventory section? I just give them those and a comms system, and call it a day.

While helmet subsystems are in the other books of the 40k line, they aren't in OW IIRC. Which strikes me as odd, considering this is the one setting where always wearing a helmet makes sense

It makes things easier to handle - no question of whether or not the microbead, photovisor, and respirator are on or not if they are integrated into your helmet. Besides, where have you ever seen a picture of a Maccabian Janissary wearing a photovisor over their full face mask?