Starkiller Apocalypse unlock
Crossbow Imperial Gardens vault
XMG57 Bonesaw Fire-rate hotfix 453,438
Twisted Arbalest Corruptor lazurite
Chicago Typewriter Labyrinth shipwreck
Repulsor Banish shotgun
Western Classic 6-shot revolver
Steel Flail Starter mace
Blade of Gul Short sword
Steel Katana Folded from a D row
How the letters were set
Last official hotfix is 453,438 on 12 November 2024. It fixed Bonesaw fire rate. No later Remnant II hotfix sits on the publisher blog.
S long guns are the 4 names both published lists put in S. 
Nightfall, 
Widowmaker, 
Sagittarius, 
Alpha-Omega.
The rest of the long-gun board follows the list that also published A, B and C rows. Kit numbers come from the live item pages, read today.
Where those 2 lists disagree on a kit number, the item page wins. Widowmaker is 150 damage on the item page and 125 on 1 list.
Nightfall is 4.95 RPS on the item page and 5.25 RPS on 1 list. 
Pulse Rifle location is Ascension Spire under the Custodian.
Firestorm crafts for 650 Scrap, 5 Lumenite, and the Forlorn Fragment. Older copy on this page said 500 Scrap and 1,250 mod power.
Live item page: 1,500 mod power, 75 fire / s, 15s cyclone, Burning for 5s.
Rune Pistol sits on the handgun board at A. 1 list puts it in S. The other list skips it.
Coach Gun and 
Ford's Scattergun sit on C. 1 list puts them on a D row this board does not render.
Monarch is on the long-gun A row. Both S rows omit it. This search mix still treats it as the #1 obtain question.
Long guns: S through Pulse Rifle
Nightfall crafts at McCabe. Material is Cursed Dream Silks from the Nightweaver. Cost is 7 Lumenite and 1,000 Scrap.
Base kit: 28 damage, 4.95 RPS, magazine 13, ideal 18m, falloff 50m. Locked mod is Dreadwalker. 10s of infinite ammo, 25% fire rate, 10% lifesteal.
Widowmaker buys from Brabus in Ward 13 for 1,000 Scrap. Base kit: 150 damage, 2.4 RPS, magazine 1, ideal 35m, 120% weak spot.
Sagittarius sits on the Hope pedestal in the Cathedral of Omens on Yaesha after that puzzle. Base kit: 98 damage, 4.5 RPS, magazine 1, Starfall.
Alpha-Omega crafts at McCabe from Forgotten Memory. Annihilation in the Blackened Citadel drops the memory. Cost is 7 Lumenite and 1,000 Scrap.
Base kit: 14 damage. Locked mod is Beta Ray. Brand, then detonate on reload or swap.
Pulse Rifle is A on the long-gun board. Find it in Ascension Spire on N'Erud, under the Custodian, behind 2 energy barriers.
Right slot wants the Decorum Cipher from Terminus Station. The other slot wants Memory Core II from the Dormant N'Erudian Facility.
Base kit: 16 damage, 7.8 RPS, magazine 30, ideal 22m, falloff 65m, 210 reserve, 10% crit, 105% weak spot.
Merciless crafts from Crimson Membrane after the Corrupted Ravager. 
Deceit crafts from the Imposter's Heart after Faelin in the Beatific Gallery.
Plasma Cutter sits behind the Navigator Helm door in Titan's Reach. 
Sporebloom unlocks at Brabus after a Veteran campaign clear, 1,500 Scrap.
Monarch crafts from Agony Spike. Kill the 1 True King with the mace intact. Same McCabe cost: 7 Lumenite and 1,000 Scrap. 12 damage, 10.5 RPS, magazine 60, Chain of Command.
The 4 fixed-price Remnant 2 SKUs this page names
Dreamcatcher, Pulse Rifle, Firestorm build and a DPS build. Monarch and Wrathbringer are sliders, priced in chat.
Pulse RifleRemnant 2 Pulse Rifle Guaranteed
N’Erud Pulse Rifle behind Decorum Cipher and Memory Core II. A-row long gun on this board.
DreamcatcherRemnant 2 Dreamcatcher Melee Guaranteed
Nightweaver Web melee. Doll into the web in the Tormented Asylum.
Firestorm buildRemnant 2 Firestorm Build
Red Prince fragment, then the Firestorm mod on a live DPS kit.
DPS buildRemnant 2 DPS build: Gunslinger + Hunter
A full damage kit when the long-gun board is the ask.
Dreamcatcher, Wrathbringer, Firestorm, handguns
Dreamcatcher is the Nightweaver Web melee. Feed the web the Nightweaver Stone Doll in the Tormented Asylum on Losomn.
The doll sits in Dr. Morrow's cell in Morrow Sanatorium after the Prison Cell Key. Base kit: 58 damage, 5% crit, 95% weak spot, 3% stagger.
Dreamwave charges after 250 damage. A charged attack sends a 20m wave. Slow 10s. Reverie: +2% all damage and +2% move per enemy hit, 15s.
Wrathbringer is the other 1 True King craft. Break the mace. The king can die on that break. Material is Tormentor's Pommel. Same 7 Lumenite and 1,000 Scrap.
Base kit: 101 damage, 6% crit, 85% weak spot, 80% stagger. Awakening: incoming damage adds 5% melee per stack for 10s, max 10 stacks.
You get 1 material per kill. Decide before the mace.
Firestorm is a weapon mod. Kill the Red Prince in the Gilded Chambers for the Forlorn Fragment. Craft at McCabe: 5 Lumenite and 650 Scrap.
Cyclone lasts 15s. Center deals 75 fire / s. Mod power is 1,500. Burning lasts 5s and deals 150 over that window, 450 at max weapon level. Only 1 Firestorm can be active.
Nebula is the A handgun on both lists that published a handgun row. Craft from Spiced Bile after Tal'Ratha. 7 Lumenite and 650 Scrap. Nano Swarm.
Rune Pistol stays on A on this page. 1 list puts it in S. Checkout prices for Dreamcatcher and Pulse Rifle sit on the cards under this section.
Hunter / Gunslinger is a pairing
Search also asks for a Hunter / Gunslinger build. That is 2 archetypes on 1 loadout. It is a pairing page, at Hunter / Gunslinger build.
The long guns on this page that sit in that loop are Pulse Rifle and Monarch. 
Wrangler 1860 is the Gunslinger starter on the C row. 
Huntmaster M1 is the Hunter starter.
Ask LFCarry your 2 archetypes if you want a loadout read against the boards above.
From the source
Official“Remnant II Hotfix 453,438. Bonesaw fire rate fix. FSR 3.1.1 reverted.”
“S-tier: Sagittarius, Widowmaker, Nightfall, Alpha / Omega, Rune Pistol.”
“S: Sagittarius, Alpha-Omega, Nightfall, Widowmaker. A includes Pulse Rifle and Nebula.”
“Firestorm: 75 fire/s, 15s, 1500 power, 5 Lumenite + 650 Scrap, Forlorn Fragment from Red Prince.”
“Pulse Rifle at Ascension Spire. Decorum Cipher + Memory Core II. 16 / 7.8 / 30.”
“Monarch: Agony Spike, mace intact, 12 / 10.5 / 60, Chain of Command.”
“Dreamcatcher: Nightweaver Stone Doll into the Web. 58 dmg. Dreamwave after 250.”
“Wrathbringer: Tormentor's Pommel, mace broken, 101 dmg, Awakening +5% / 10s / max 10.”
“Alpha / Omega: Forgotten Memory from Annihilation. 14 dmg. Beta Ray. 7 Lumenite + 1000 Scrap.”
“Nightfall: Cursed Dream Silks, 28 / 4.95 / 13, Dreadwalker.”
FAQ
The 4 S long guns are Nightfall, Widowmaker, Sagittarius and Alpha-Omega. Both published lists put those 4 in S. Nightfall if you want Dreadwalker. Widowmaker if you want the 150-damage shot.
Kill the 1 True King with the mace intact. Craft Agony Spike plus 7 Lumenite plus 1,000 Scrap at McCabe. Breaking the mace is the Wrathbringer path.
Nightweaver's Web in the Tormented Asylum on Losomn. Feed it the Nightweaver Stone Doll from Dr. Morrow's cell in Morrow Sanatorium. You need the Prison Cell Key.
Kill the 1 True King after the mace breaks. The break can be the kill. Craft Tormentor's Pommel plus 7 Lumenite plus 1,000 Scrap at McCabe.
It is a weapon mod. Kill the Red Prince in the Gilded Chambers for the Forlorn Fragment. Craft at McCabe with 5 Lumenite and 650 Scrap. Power cost is 1,500.
That query is a class pairing. Use Hunter / Gunslinger build. Pulse Rifle and Monarch are the 2 long guns on this page that sit in that loop.
- S/A/B/C boards from the 2 live lists. Firestorm craft 650 Scrap and 1,500 power. Pulse Rifle at Ascension Spire. Hotfix 453,438 named. Source names left the prose.
- Cover swapped in. Board copy cleaned. Obtain facts unchanged.