Las weapons have always felt a little underwhelming to me, so this is my attempt to make them a little more attractive. I'd like some opinions on these.

Rapid Discharge Capacitor: Although not strictly speaking standard issue by the Departmento Munitorum this modification is very common, especially amongst Imperial Guard regiments that see significant close quarter combat. This mod increases the durability of the capacitors of the las weapon it is installed in allowing for an increased rate of fire.
Effect: Increase the semi auto rate of fire by one, if the weapon does not have semi auto available it gains an RoF of S/2/- if the RoF for semi auto is raised to 3 or higher then the weapon gains full auto equal to twice its semi auto rate of fire. Use: Any Basic, or Pistol Las weapon. Availability Scarce

Eg: Laspistol rate of fire goes from S/-/- to S/2/-. A Lasgun RoF goes from S/3/- to S/4/8

Power Selector: Las weapons are set to discharge at a specific amount of energy per shot deemed ideal by the Departmento Munitorum for maximum efficiency between killing power and power usage. With the addition of a power selector the user can control how powerful the discharge is, allowing for a more deadly shot with fewer shots per magazine, or lower powered shots to conserve ammunition.
Effect: Effectively gives the weapon multiple levels of damage. Low power, each shot uses half a charge, but only deals 1d10 E damage. Half Power deals the standard damage for the weapon, and uses 1 charge per shot. Maximum power adds 1 damage and 2 penetration to the weapons profile, but each shot requires two charges. Use: Any Pistol, or Basic Las weapon.

Using maximum power with an overcharge pack causes the weapon to consume 4 shots per charge, but loses the reliable quality or gaining the unreliable quality if it was not reliable. If fired on semi-auto, or full auto the weapon also gains the Overheats trait. This modification has no effect when using Hot Shot magazines since they completely drain the power pack, regardless of the power setting.

To compensate Hotshot Magazines now increase the Damage by 3, and the Penetration by 5

Extended Magazine: These are longer pattern magazines. Increases ammo pistol capacity by 50%, basic ammo cap is doubled Use: Any Basic, or Pistol weapon with a removable magazine. Availability: 1 step lower than the existing ammo type.

Drum Magazine: These are often found with more poorly equipped PDF forces and mercenary groups unable to afford proper support weapons, they quadruples the ammunition capacity of the weapon. Increases the weight of the weapon by 3.5kg. Due to the increased weight on the reciever the weapon is more likely to jam, the weapon loses the Reliable quality, or gains the Unreliable quality while using this magazine. Because of its size a shot selector cannot be used while using a Drum Magazine Cost 50 Use: Any Basic; Las weapon with a removable Magazine. Availability: 2 steps lower than its existing ammo type.

Do as you like, but in my opinion, the "not so mighty" lasgun is part of the style and grimdark effect of WH40k. For lasweapons with more punch, there are Hellguns, assault lasguns and so on.

My issue is more that relative to the supposedly inferior stub weapons are usually a better choice than a lasgun.

For the Imperial Army stub weapon are inferior because of ammo, Lasweapons have fare greater capacity, are more reliable and a soldier can carry much more of the ammo.

Example:
(1 Clip is 10% of weapon weight)

Autogun:
10 clip equal 3.5kg and carry 300 rounds

Lasgun:
10 clip equal 4.0kg and carry 600 shots

So they can carry twice the ammo...

Also, you don't need to carry/produce your own ammo. Even a cut supply line of manufactured bullets means nothing to a man with a lasgun. Know somewhere that you can plug in a toaster? You can rearm. If you're really desperate? Toss it into a crackling fireplace for the night. You try doing -that- with a bullet clip...

All valid points, although I doubt the odds of a city under siege having reliable enough power to full charge a magazine. On the drum mag the effect should say any basic weapon, not just las weapons. No one has said anything about the RDC, or Power Selector, but given the general lack of specialty ammo for Las weapons, especially something like the manstopper rounds, I figure that something like these would be kind of appealing.

GregorM1980 said:

Hellguns require heavy backpacks. The lack of penetration on a standard Lasgun is a bit underwhelming, though.