To get the most up to date stats (Patch 2.0) i've used a mix of the Official wiki, Fexxtra's Wiki, and ingame stats. There are certain item synergies I haven't taken account for like the rangers Gunner Passive (20% faster reload), Sharpshooter's garb -20% Reload Time with Arbalest / Arquebus / Crossbow attacks or Blunderbuss weapon modal giving flanked making it must have for Ranged Streetfighter. These types of weapons will be even stronger relatively speaking with these synergies. Eccea Arcane Blaster Pistol is similar to Animancer's Energy Blade that its OP vs moderate/extreme underpenetration but terrible vs normal/overpen targets. Some of the lower rated weapons can be exceptionally strong in very rare scenarios (for instance vs spirits) but I am mostly rating them for their general usefulness. Weapons are listed randomly within any Tier. Might change that at some point but it will require some work. I am also comparing weapons at max enchants. I haven't taken into account that some weapons will be very useful early on in the game if they start out with high weapon quality, forgoing the need to upgrade them.

• The Red Hand[pillarsofeternity2.wiki.fextralife.com] (Arquebus) - Double Barrel: Fires two shots before reloading, but has a reduced range. Guilty Conscience 2% Damage dealt and received on Kill until Rest (Stacks 20 times). Twin Slugs Knockback target within 4m on scoring Hit. Hands down the most broken item in the game right now. Double Barrel effect is almost doubling your dps by itself and Guilty Conscience stacks up to 40% dmg taken/recived. Very easy to get (12 lock difficulty chest in delvers row)

• Dragon's Dowry[pillarsofeternity2.wiki.fextralife.com] (Arquebus) - Runelock upgrade: 15% chance for wielder to suffer 15 Burn Damage on launching attack, +30% Damage as Burn. 1 per rest ability: +40 Action Speed for 20 sec, 5 Burn Damage for wielder per 3 sec for 25 sec. 30% Lash dmg and a very powerful active puts this solidly into tier S. Does make you deal dmg to yourself so use with care.
  
• Xefa's Empirical Explication[pillarsofeternity.gamepedia.com] (Blunderbuss) - Multi-Shot: Fires multiple projectiles Transmogrified Shot: +15% Damage as Raw Matter Repulsion: Target knocked back on Crit. +1 Penetration, 15% damage as Slash. -25% Range, +15% Damage. Massive dmg buffs and knockback on crit makes it one of the best ranged 1hs in the game
  
• Eccea Arcane Blaster Pistol[pillarsofeternity.gamepedia.com] (Pistol) - deals Raw Damage, Imbued Ammunation deals additional Crush/Corrode Damage & +35% Reload. Bullet Time: 10% chance to reload instantly for a short time. Raw dmg means it is increasingly strong against targets that you would normally underpenetrate (- 25/50/75% dmg) but weak with normal/overpenetration attacks. (Lower dps then a non-unique). Keep it as a backup vs heavily armored targets.
  
• The Eye of Wael [pillarsofeternity.gamepedia.com] (Scepter, Caster stat stick) - Obfuscation 10% chance to become Invisible for 8s on scoring Critical Hit. The Hundred Visions +2 all Illusions Power levels Illusive Spell: 5% chance to cast random Illusion spell on target on scoring Hit. 10% chance to cast random affliction on target on crit. Form Phantasmic: Cast random defensive illusion spell when bloodied. Really strong on Illusion Mages. Decent on Illusion Priest/Ranged Trickster
  
• Frostseeker[pillarsofeternity.gamepedia.com] (Warbow) - Garland's Tears: Fires multiple projectiles at slightly reduced damage +10% Damage as Freeze. Garland's Rake: Freeze/Slash Damage AoE at target location on scoring Crit. Garland's Breath Deals 15-30 Freeze damage and paralyzes enemies for 8 second in a cone area. Extremly good dps stats. The on use is abit clunky to use since it requires you to flank if you want to hit multiple enemies without hitting your own guys.
  
• Watershaper's Focus[pillarsofeternity.gamepedia.com] (Rod, Stat Stick) - +3 water PLs, +3 Frost PLs, 15% chance to cash Crush dmg AoE on hit. Very Strong of Frost/Wind Wizard or Druid. S-Tier Stat Stick if you build around it.
  Watershaper's Focus (Rod, Ranged auto attack) - +3 water PLs, +3 Frost PLs, 15% chance to cash Crush dmg AoE on hit. Some pretty wierd mechanics with Ondra's Wrath enchant[forums.obsidian.net]. Can proc multiple instances of Ondra's Wrath against targets that are bunched up very close together. Combined with effects like Driving Flight and Twinned Shot from Ranger means you can get some absurd bouncing effects getting in the ballpark of 25 full weapon attacks vs 8 clustered up opponents. Seems really strong for solo play where this effect is easier to reproduce, but less useful (but still strong) for party play.
  
• Kitchen Stove[pillarsofeternity.gamepedia.com] (Blunderbuss) - Hurried -25% reload time. Everything and Anything +5% Damage as Slash, +5% Damage as Crush. Wild Barrage(2/rest): -20% reload time, Ranged Attacks bounce 2 times, 10% dmg for 15 sec. 10% Combined Lash, reduced reload time and a very strong active. Multi shot proccs on hit effects in AoE (for instance Stunning Surge from Monks).

• Spearcaster[pillarsofeternity2.wiki.fextralife.com] (Arbalest) - Forceful Impact: 50% chance to Knockback and Daze target on Hit Elemental Bolts +5 Ranged Accuracy (Increases with Arcana skill, 0,5 Accuracy/point), +3% Damage as Burn, +3% Damage as Corrode, +3% Damage as Freeze, +3% Damage as Shock. Pinning 20% chance to Immobilize target on scoring Hit. Combined 12% lash effect and additional accuracy with arcana skill gives this crossbow very high dps. You have to invest heavily into arcana to make it worthwhile forgoing other useful active skills like athleticism, so if you are not planning on making the wielder a scroll user it is probably not worth picking.
  
• The Eye of Wael[pillarsofeternity.gamepedia.com] Obfuscation (Scepter, Martial) - 10% chance to become Invisible for 8s on scoring Critical Hit. Illusive Spell: 5% chance to cast random Illusion spell on target on scoring Hit. 10% chance to cast random affliction on target on crit. Form Phantasmic: Cast random defensive illusion spell when bloodied.
  
• A Whale of a Wand[pillarsofeternity.gamepedia.com] (Wand, Caster stat stick) - Beasts Imagined: Hits with this weapon have an 5% chance to cast Form of the Helpless Beast on their target Sea Stories: Spell Hits have a 5% chance to Charm targets. Fantastic Friends Summons a pair of drakes to fight for the caster. Tall Tales 5% chance to cast Arkemyr's Dazzling Lights on target. Useful stat stick for casters. Sea Stories proc is very nice with AoE spells. Ok proccs and a very strong active summon ability.
  
• Fleetbreaker[pillarsofeternity.gamepedia.com] (Arbalest) - +8 accuracy. 30% miss to graze. Can be enchanted with either +4 accuracy, +1 pen, 10% dmg against targets 8 or more meters away or +8 accuracy, +2 pen, 20% dmg against targets 4m or closer. The 4m or closer is probably strongest since in a lot of fights (except for some bossfights with massive aoe) you want to keep your party close to hit with AoE heals/buffs. Probably B/C-Tier if going with the 4m or further away enchant
  
• Essence Interrupter[pillarsofeternity2.wiki.fextralife.com] (Hunting bow) - Experimental Souls: Critical Hits with this weapon transfer experimental soul energy into the target, morphing them into a sentient creature when the target dies. Soul Diplomacy Modifies Experimental Souls effect: now creatures are always allies. Charged Copper: Deals Best of Pierce/Shock. Either +5% Damage as Shock or 5% as Burn(Increases with Metaphysics). The summons lasts for about 20 seconds. It seems to scale of enemy creature level, so you can get some decent summons going.
  
• Fire in the Hole[pillarsofeternity.gamepedia.com] (Blunderbuss) - Basic attacks deal best of Pierce or Slash Damage in small Radius- Ranged attacks bounce +1 times, -15% damage, +15% reload time. Ranged attack bouncing is very strong but has pretty strong penalty to make up for that. Multi shot proccs on hit effects in AoE (for instance Stunning Surge from Monks).

• Blightheart[pillarsofeternity.gamepedia.com] (Arquebus) - Living Wood: 20% chance to cast Corrode Damage cone AoE from self and Hobble target on attack. Additional effects based on Class/soulbound level. Soulbound only upgrading to superb holds it back. Very useful early game because you can get it early and its easy to get max soulbound level
  
• Scordeo's Trophy[pillarsofeternity2.wiki.fextralife.com] (Pistol) - Obliterating Crit +25% Crit damage. Opening Barrage Scoring Hits with this weapon grants a stacking -5 Recovery time for 30.0 sec. I think going for the melee/ranged synergy for the alternative enchants is too much of a hassle and not powerful enough. The reduced recovery time stacks infinitely but the stacks fall off one at a time when their 30 sec are up. I havent done much testing but its possible that you can make a very good one handed style ranged build with this weapon.
  
• Aamiina's Legacy[pillarsofeternity.gamepedia.com] (Hunting Bow) - 15% dmg as crush, 5% dmg as slash. Grants Precision Impact (5% chance to daze, 10% if wielder is dwarf). Grants Warning of Blue Water (1/rest). AoE Resolute/Shaken(Rank 2/1 Inspiration/Affliction). 20% Lash dmg makes it a decent choice for dps.
  
• Hand Mortar[pillarsofeternity.gamepedia.com] - Deals best of Slash and Pierce in small AoE. Point Blank +20% Ranged Damage at ranges below 2.5. Can make it work on a ranged rogue with Backstab passive but otherwise not very good. Multi shot proccs on hit effects in AoE (for instance Stunning Surge from Monks).

• Thundercrack Pistol[pillarsofeternity.gamepedia.com] (Pistol) - Veil Piercing (50% dmg vs spirits), 15% dmg as Shock, Paralyze target for 2s on crit, Storm Rune Shot (1/rest) Pulsing AoE shock dmg. Very strong vs spirits. 15% Lash makes it ok.
  
• Current's Rush[pillarsofeternity2.wiki.fextralife.com] (Scepter, Beast of Winter)- 1% hit to crit every 1s (resets on crit), 20% chance to AoE crush/Immobilize on crit. +10% crit dmg. Havent tested but unless the AoE is absolutely massive this scepter doesn't seem that useful. You even get it so late in the game (Beast of Winter) that you should have picked up multiple strong options before then.
  
• Veilpiercer[pillarsofeternity.gamepedia.com] (Warbow) - 10% dmg as Raw, Veil Piercing (bonus dmg vs spirits),15 accuracy vs spirits. 50% chance to recover immidietaly on crit. -10% duration of beneficial effecs on hit. Grants Purging Volley (1/rest) Removes all hostile and beneficial effects in an AoE. 10% dmg as Raw and 50% chance to recover immediately on crit is decent for dmg. Veil Piercing makes it great vs spirits.
  
• Saint Omaku's Mercy[pillarsofeternity.gamepedia.com] (Warbow) - -10% action speed, 5% dmg (Increases with survival skill, 0,5% per point), +1 pen. Resotre +10 health to nearby allies on Kill (Increases with Religion). 50% chance to recover immediatly on crit. Saints Grace (10m Aura). +15% action speed (increases as wielder loses health, Scales UP to 15%, starts at 0%). At 20 survival its only 15% dmg. 50% chance to recover immediately on crit is nice. Action speed as wearer loses health is pretty meh since it seems to be inversely proportional to the health you have (so 15% action speed at 0 health, 0% at max health)

• Three Bells Through[pillarsofeternity.gamepedia.com] (Arquebus) - Unstoppable Shot: Reduced base Damage (Only 50%), Attacks in a line (mxximum 3 targets), +1 Penetration. 10% dmg. Attacks interrupt on crit. Reduced base dmg makes it terrible for single target dps and attacking 3 targets in a line is awkward. Cone is very small.
  
• Amira's Wing[pillarsofeternity.gamepedia.com] (Rod) - +15 defenses vs wind attacks, +1 Wind PL. 5% chance to interrupt and prone on hit. Grants Hylean Squall (1/rest,) AoE crush, -65% stride for 10s, 4m push. Grants Wilting Wind (1/rest, PL 8 Wizard spell!) AoE raw dmg, Weakend for 12s. The weapon itself is pretty terrible but beeing able to cast Wilting Wind (1/rest) is very nice.
  
• Rod of the Deep Hunter[pillarsofeternity.gamepedia.com] (Rod) - -1 Deflection & +3% recovery time for 45s on hit (stacks, doesnt include grazes). Grants Crashing Surf (1/rest) AoE Crush and knock prone. Requires to flank to not hit allies. The proc takes way too long to stack up and would only be useful against bosses.
  
• Amaliorra[pillarsofeternity.gamepedia.com] (Scepter) - +10 accuracy vs vessels. Frighten attack on Kith/Wilder on crit. Grants Claim the Husk (1/rest) Dominates a Vessel. Pretty terrible unless fighting Vessels.
  
• Keybreaker Scepter[pillarsofeternity.gamepedia.com] (Scepter) - +10 defenses except for deflection for 30s on scoring kill with keybreaker. Frighten Kith on crit. Misotheist (5m Aura) 20% chance to Reflect Punishment/Condemnation attacks. Pretty weak.

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