Asking for subs or likes on you YT channel is against the forum rules and generally will get you dislikes more than likes because of this.
These forums are not here to grow your YT subscriber base.
Especially if it's a quick-scoping montage
Generally speaking, the average person on these forums probably won't be a fan of Quick-scoping, nor channel advertising for that matter, so it's kind of lose-lose advertising your video here. You might have better luck on reddit (/r/mw3), but I dunno if they're even a fan of Quick-scoping.