[swaghauler]

The primary armor for soldiers in the Twilight2000 era would have been the PASGT Armor with surplus Vietnam-era US Army M69 Flak Vests (3.5kg AV 1/2?) and the occasional M1955 USMC Vest (4.5kg AV 1/2?) as well.

PASGT Armor: This vest was introduced in 1985. It is NIJ Level 3A protection covering the chest (80%, 16 or less on 1D20) and the Abdomen (60%, 12 or less on 1D20) weighing 4kg for a medium size. It soldiered on into the 21st Century.

The only other "hard" armor that might be available in the Twilight2000 timeline would be surplus versions of the US Army's "Chicken Plate" Ballistic Armor for Helicopter Crews.

Aircrew Personal Body Armor: Made in 1968, it was the predecessor of the Army's Ranger Body Armor plates. Made primarily from 80% Aluminum Oxide and Ceramic, the plates came in two configurations. A single plate version for pilots (who had armored seats, such as they were) and a two plate versions for gunners/crew chiefs. Coverage was 70% of chest and weight was 6.8kg for 1 plate version and 13.6 kg for 2 plate version. They were supposedly proof against .30 caliber (Level 3 rifle?).

Police Vests:
Most police use concealable vests ranging in NIJ Level from 2A to 3A during the 90's. The Level 2A/2 vest would have been the most common vests for police. Level 3A concealable vests were rare but did exist (there are the remnants of an RBR Level 3a bought in 1997 sitting on my workbench right now...the victim of ballistic testing by your's truly). By the 90's, Level 1 material was limited to making "Ballistic Clothing" such as umbrellas and suit coats.
There were generally THREE coverage levels for concealable vests which are still available today;

Full Coverage Vest: This vest covers 80% of the chest and 60% of the abdomen for "Over-Vests" (worn outside of a shirt) and 80% of the chest and 40% of the abdomen for concealable vests (worn under a shirt).

Contour Coverage Vest: This vest is generally a concealable type that allows more flexibility/agility than full coverage vests without reducing protection too much. Contour vests cover 70% of the chest and 20% (or less) of the abdomen.

MiniWrap Coverage: This vest is always a concealable type and is usually worn by those concerned with hiding the fact that they are wearing armor. As a result, MiniWrap covers just 50% of the wear's chest. There is no abdominal coverage.

Trauma Plate Pockets: These special pockets are sewn on the outside of soft body armor and allow the placement of an additional soft panel or hard trauma plate to protect the chest (in the heart area). Some body armors may also have a trauma plate pocket over the spine as well. MiniWrap body armors generally don't have trauma plate pockets.
There are two sizes of trauma pocket, small and large.
Small pockets allow 20% coverage of the chest with the added panel/plate.
Large pockets allow 40% coverage of the chest with the added panel/plate.