Mate we are running in circles here... So lets go on your original question regarding SiG2000:
Weight,dimensions and rate of fire are unimportant issue in hostage rescue scenari
nly thing that matters is extreme accuracy and stability of results in any weather conditions....
Now since the majority of LE or CT scenarios require precision shooting at the distances of 100-300m and we are talking about high level accuracy of ~0.3-0.6MOA (MOA being Minute Of Angle) which means that at 550m rifle should place 5 bullets inside 50mm diameter... You joust cant achieve that kind of accuracy whit semi auto...
Also in that kind of scenario most engagements require joust few shots per scenario - sometimes only one shot...
Chengdu like I said type88, like any other designated marksman rifles, is great in here role but simple not suited for hostage rescue scenario... That rifle was designed to extend reach of aimed fire for troops in combat environment and for that use she is perfectly suited. In such scenario fast target acquisition and high rate of fire are advantage but in hostage rescue situation there are simple not important... What is important is ability to hit the particular part of the body and to do it whit one single shoot and that is all there is to it...