Also - In SR5 you don't have any penalties for using a rifle highly mobile CQB. Not even when doing full auto while running our even using a sniper rifle. Normally (in real life) it would be a lot better with a pistol, MP or a SMG. Would like to see double running penalty for rifle and heavier. plus running speed movement penalty for heavy weapons and penalty if you do not take aim before using sniper rifles.
I don't want to come down just on the sniper rifle user, but when you get down to it, the only real downsides to a sniper rifle is pretty much social acceptability, and the price. Have to be careful out on the streets, or in public, being seen with a large weapon, or being seen by the police. But once you are on a run, there is nothing mechanical to stop someone from using a sniper rifle with the same ease of clearing hallways and rooms, as one does with a handgun or SMG, and they do much more damage.
13P and -4 AP for the Desert Strike vs 11P and -2AP for one of the better ARs, 8P and no AP for the better SMGs, 9P and -2AP for a roomsweeper...
So I, too, have been trying to come up with sniper rifle mods. There is one PC in my game that uses a Sniper rifle on Runs, and some of the other players complain about basically the way there's no difference between a sniper rifle and a pistol in combat, except the damage. Why use an assault rifle, or a pistol, when you can use a sniper rifle in close range gun fights just as effectively.
I've been thinking of doubling the -3 penalty for shooting while in melee if you have a longarm
or cutting "short" range in half, and giving it a -3 penalty because using a scope at short ranges is ineffective, and not using the scope to fire from the hip is ineffective.
or requiring a "take aim" action before firing to negate the -3 penalty imposed above.
Maybe a penalty every time you bring your weapon to bear on a new target, unless you take an action to ready each time, or take aim each time, or something... Comes down to trying to be fair to everyone, while still having something in place so that there's a reason to use more mobile weapons in close combat.