A gauss gun uses a surge of current and a powerful magnetic pulse to launch a projectile. The low heat of firing allows very high rates of fire, but the enormous battery pack needed to power such a high ROF typically keeps the rate down to a more reasonable level. Gauss guns require both a bullet or needle magazine and a power pack. To take advantage of the innate high ROF, the latter is typically quite bulky and is often worn as a backpack. Smaller power packs allow the same hard hitting punch at a lower ROF. Magazines are commonly available in 2000, 1000, 500, 250, 200, 100, 50, 25, 20, and 15 shot capacities; the stats given list the weights of 100 round magazines, modify the weight proportionally for smaller capacity magazines (that is, a 50 round magazine would weigh half as much, and so on).
Hints for matching ammo & power packs: With fast discharge power packs, a magazine with a capacity of 5 × the ROF means the ammo and power run out at the same time. With high capacity power packs, a magazine capacity of 50 × the ROF also exhausts the power pack and the magazine simultaneously.
The mass of the power pack is not included in the listed mass of the gauss weapon. Small power packs are typically attached direcly to the weapon; add the mass of the pack to that of the weapon. If the weight of any attached power pack plus extra ammunition weight from increased magazine size exceeds the listed weight by 50%, increase bulk by 1. If it doubles the listed weight, increase bulk by 2. If it increases the weapon weight to three times that listed, increase bulk by 3, five times the listed weight increases bulk by 4. If you attach the power pack to the weapon with a flexible power cord, the power pack does not add to the weapon weight for computing bulk but can pose other inconveniences (the cord snagging on brush or furniture, having to put on a bulky pack when you want to use the weapon, etc).
The ammunition of all gauss guns of the same caliber and the same TL is interchangable; bigger weapons just accelerate the bullets to higher velocites and use more energy doing so.
Gauss Bullet Guns
| TL | Weapon | Type | Damage | Acc | Range | Weight | ROF | Shots | E | Min ST | Bulk | Rcl | Cost | LC | Notes |
| 9 | Induction Pistol, 4mm | pi | 3d(2) | 2+1 | 400/2400 | 1/0.28 | 40 | 100(3) | 1 | 6 | -2 | 2 | $700 | 2 | [1,2] |
| 9 | Heavy Induction Pistol, 4mm | pi | 4d(2)+1 | 2+1 | 400/2400 | 1.9/0.28 | 40 | 100(3) | 2 | 7 | -3 | 2 | $1400 | 2 | [1,2] |
| 9 | Induction Carbine, 4mm | pi | 6d(2) | 5+2 | 400/2400 | 3.2/0.28 | 40 | 100(3) | 4 | 8 | -4 | 2 | $2700 | 2 | [1,2] |
| 9 | Induction Rifle, 4mm | pi | 7d+1(2) | 6+2 | 400/2400 | 4.6/0.28 | 40 | 100(3) | 6 | 10 | -5 | 2 | $4000 | 2 | [1,2] |
| TL | Weapon | Type | Damage | Acc | Range | Weight | ROF | Shots | E | Min ST | Bulk | Rcl | Cost | LC | Notes |
| 10 | Needle Pistol, 2mm | pi-1 | 2d+1(5) | 3+1 | 480/2000 | 0.8/0.06 | 40 | 100(3) | 1 | 7 | -2 | 2 | $700 | 2 | [1,2] |
| 10 | Needle Pistol, 2.5mm | pi | 3d-1(5) | 3+1 | 600/3600 | 1.5/0.12 | 40 | 100(3) | 2 | 9 | -3 | 2 | $1400 | 2 | [1,2] |
| 10 | Auto Needler, 3.3mm | pi+2 | 3d+2(5) | 4+1 | 800/4800 | 3.1/0.26 | 40 | 100(3) | 4 | 10 | -4 | 2 | $2300 | 2 | [1,2] |
| 10 | Assault Needler, 2mm | pi-1 | 4d(5) | 6+2 | 500/4000 | 2.3/0.06 | 40 | 100(3) | 3 | 9 | -4 | 2 | $2000 | 2 | [1,2] |
| 10 | Battle Needler, 2.5mm | pi | 5d(5) | 7+2 | 600/3600 | 4.4/0.12 | 40 | 100(3) | 6 | 10 | -4 | 2 | $4000 | 2 | [1,2] |
| 10 | Support Needler, 3.3mm | pi+2 | 7d(5) | 7+2 | 800/5000 | 10.5/0.27 | 40 | 100(3) | 15 | 11B | -6 | 2 | $7500 | 2 | [1] |