Pistols:  In general only revolvers can be scoped, the reason for this is that the slide on most automatics is no place to put a scope (the constant jerking will screw with the lens alignment.

Submachine guns:  Though scopes can be attached to any submachine gun that doesn't have an exposed slide-action (like automatic pistols), it is most effective when attached to a submachine gun that required 2 hands for effective usage (Think H&Ks, instead of MACs)

Rifles:  Pretty much all rifles can be scoped, with little to no problems.

Sniper Rifles:  Obviously they work best with a scope attached, but what about upgrading that scope?  I'm sure you'll find this helpful.

Scopes cause one concealability rank to be lost.
Pistols can have up 8x magnification, and hold no options.
Submachine guns can have up to 10x magnification and holds 2 options.
Rifles have all magnifications and can hold 3 options.
 

Base Cost

Pistol	100eb
SMG	150eb
Rifle	300eb
Sniper Rifles	450eb

 

Magnification

Magnification	Cost Multiplier
5x	1x
8x	2x
10x	3x
12x	4x
15x	5x
20x	6x

Scope Bonuses

WA Bonus	Cost Multiplier
+1	1.1x
+2	1.75x
+3	2x
+4	4x
+5	8x

 

Options

Anti-Dazzle	200 eb
Low Light	150 eb
Infrared	200 eb
Thermal Vision	200 eb
Times Square Marquee	300 eb
Threat Designator*	300 eb
System Readout*	200 eb

* - requires Times Square Marquee option

Threat Designator - puts targets in brackets if it detects a firearm in its hands.  If a target comes into line of sight of someone looking through a scope with this option, the firer gets a +1 to initiative roles.  Also, it allows the firer to ignore darkness modifiers.

System Readout - This gives the firer detailed information such as remaining ammunition, currect mode of fire, wind direction and speed.  This option also allows for laseing a target for grenade lobbing (+1 to underbarrel grenade launcher attacks).

Laser Sights:
 

Bonus	Pistol	SMG	Rifle
+1	75 eb	100 eb	200 eb
+2	100 eb	175 eb	400 eb
+3	200 eb	350 eb	900 eb

Bipods:
Mountable only to long-barrel SMGs, Rifles, sniper systems, machine guns, and bazookas.  Bipods add +2 to to-hit-rolls when firing in a prone position.
Cost: 150 eb