The Universe is a large place and there is a lot of equipment and gear being used amongst the various planets and races and it would be impractical to list all items that are used by everyone. As such, using TL 10 as a base and the technology notes, you should use any of the equipment found in the various GURPS books. This equipment does not need to be modified at all save that all costs should be listed in cubits, and no, the dollar symbol is not the alternate symbol for cubits, so do not use it. Any equipment found on this site replaces the equivalent if it exists in a GURPS book, and any additional notes can be found below.
The standard weapon is the laser. These can be designed as normal using GURPS Vehicles 2nd Edition. Most pistols use the compact and close range options. Design the weapon to TL 10 and then multiple the final cost by x10 to get the price in cubits. Lasers use cr. damage, not imp.
Since the revision to GURPS 4th Edition this has changed somewhat. When the revised vehicles of GURPS Vehicles comes out, this will be revised properly.
Other weapons can exist in other societies, but the Colonials, Cylons and other major races have adopted the laser as their main weapon. Projectile weapons are not in wide spread use, nor are other types of weapon.
There are not many types of armour available and thus use the ones listed here. Powered armour is not in use at all. Force fields and energy shields of any kind do not exist.