This is a captured alien artifact built for an Attar - which is to say, built for a hand that's been surgically modified to human (or close enough).

Ammunition: Plasma pistol power pack

Weight: 1.8 kg

Magazine: 12

ROF: SA

Damage: 4, with possible secondary incendiary effects.

Penetration: 1-2-Nil.  However, a plasma pistol ignores conventional soft body armor, including helmets.

Bulk: 2

Recoil: 6

Range: 15