[rkapl]

It is based on the original Advanced Bullet time. Adds some stuff like inacuraccy, bursts for shotguns, automatic slow motion and fine-tunes some default settings(new colours for trails, new lengths of trails...).
Cvars:
bt_inacc 25 inacuraccy for regular bullets, bigger value means bigger accuracy
bt_shotguninacc 5 inacuraccy for shotgun bullets
bt_shotgunburst 6 number of bullets in one shotgun shot
bt_bulletspeed 800 speed of regular and shotgun bullets
bt_sniperspeed 3000 speed of sniper bullets(however aiming does not work right for snipers)
bt_speedlimit 130 speed limit for player movement(only when bt is active)
bt_gravity 200 gravity for player movement(only when bt is active)
bt_red , bt_green , bt_blue (0,83,0) is colour of the trails
bt_intensity 180 opacity of the trail

And finally the magic command bt_toggle 1/0 or bt_toggle on/off .