More than once my group has created weapons. Here are some examples:
Sniper Rifle: Damage 8, Crit 2, Range Extreme, Price 1,400 Credits, Rarity 6, Specials Accurate 1 and Stun Setting
Saberdart and Palm Shooter: Damage NA, Crit Automatic, Range Medium, Price 2,000 credits for 1 Saberdart, 200 for Palm Shooter, Rarity 9 for Saberdart and 4 for Palm Shooter, Specials Vicious 14
Post your ideas here, but be reasonable with their capabilities. Weapons that are OP should be expensive.