Completely outclassed by modern energy weapons, their damage is fixed at 2d10 or 4d10 per shot, and each shot draws the equivalent power from their power source of either 2 or 4 SEU. They have half the range of modern lasers due to more primitive lasing elements and weigh twice as much.
Their power packs are so primitive that they cannot be recharged from sources with modern connections. A good Technician can attempt to jury rig a connector. To do so they must make a Repair Machinery check at -25%. Failure means that the weapon's power pack will be ruined (succeed or fail, the connector no longer works with modern devices). Any Repair check on the rifle itself is likewise at -25%.Given their obsolescence, archaic laser rifles are almost impossible to buy or sell, except to/from collectors or possibly a museum. Therefore, no standard price is listed - it could be anything from a handful of credits to tens of thousands.
This item is introduced mostly as something for characters to find as mentioned above, or as an adventure seed (the characters might be hired to transport one safely from owner to owner, or to steal one, etc). The marquee image is of Lost in Space laser rifles.