Pistol frames
Cylinder- .44 only, tight damage spread base crit chance of 12% base crit damage of 115%, max range of 12 optimal 9, but limited to 6 round capacity and is incompatible with both extended mag and rapid reloader but can use scopes.
Sniper rifle frame.
Stinger- 5mm only, average damage spread 23 ap to fire, a lower range than other snipers, and a strength requirement of only 4, can be suppressed (obviously)
Spear molds
Glaive- wider damage range and a boost to sweep
needlepoint- higher critical damage and tighter damage spread but lower overall damage
Barbed- Bleed chance, higher ap cost
Sword molds
Short mold- lower ap cost, lower strength requirement, but larger damage spread, bonus to crit chance, turn machete into a short sword
Attachments
Green Laser- increases the precision of special attacks by x% (decided by quality)
Miniscope- scope for pistols and SMG's gives a small crit damage boost
Bayonet- allows for a special melee attack with the weapon ap cost of 15 (and is affected by dexterity), damage decided by the component, and incurs 125% dmg resist and threshold, barrel attachment.
Thermal Scope- weapon is no longer affected by darkness penalty for mammals, and humanoids, robots, and insectoids are still affected
Rail accelerator- barrel attachment that increases the maximum range of the weapon by 25%