I requested this from Pean in custom build but why not suggest it for everyone as well... So, right now there is delay in silentaim mode 2 but it is quite low. So onetapping might not be "one"tapping. So why not let user decide how much he/she wants to wait after first shot before second shot.
Yes, so you can like use it for onetap by just holding it down and it will shoot let's say every 400 ms