I haven't seen this subject yet, plus i'am a new member, but here it goes.
I think a 2nd attachment would be a great perk. so you could add a silencer and a Acog, or a M203 and a silencer, etc etc
This one will sound outrageus. but heres a shot.
a Semi to Full Auto perk. this would take up the 2nd and 3rd slot of your perks. and it just applies to the M14 and the G3... but we can dream cant we?
The new attachments ive been thinking of be putting a rifle scope on some rifles. note the word some. we dont want campers to be able to snipe you half way across creek with a scoped Mini Uzi, but just think about it. if you put a rifle scope on a M4. you could effectively use it as a automatic sniper.
Another attachment would be a silencer for the snipers. except for the .50 Barret... just because... can you IMAGINE that thing with a silencer? it would yes. be amazing. but totally over kill. but you would have to shorten the range greatly. and the damage. but its just a idea
The Reflex Sight or Red Dot Sight on a sniper.
because i think it would be amazing. i cant really explain what powers my thinking as to put a RDS on a M40. but i think it would be a amazing Mobile Sniper
The last and final attachment would be... DUCKTAPE!.... (Doom Refrence) im kidding, but still. being able to put a flashlight on your M4 would just make it more tacticool on Wet Works.