What is the Beholder Conductor replace gun quest?
Swap Bart's live pistol for the harmless gold D.M. officer award gun during the ambassador VIP arc — required for ambassador survival and Que Será Será.

Beholder Conductor replace gun guide: find the gold D.M. award pistol, swap Bart's live weapon, save the ambassador, and unlock Que Será Será — July 2026.
Ambassador murder arc — swap Bart's live pistol with the gold D.M. award gun before the VIP finale.
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The Beholder Conductor replace gun quest is the silent flag that decides whether the ambassador lives or dies. Bart, the disgraced former conductor, patrols first class with a live service pistol meant to provoke a diplomatic assassination. Winston can neutralize the plot by swapping that weapon for a harmless gold officer's award gun marked D.M. — initials engraved on the trophy barrel.
Players search beholder conductor replace gun, Bart gun swap, or ambassador assassination when the VIP murder arc stalls: Bart still carries real ammo, credits roll on Mars Aeternum, or Que Será Será never appears despite a clean bomb defuse. This replace gun guide covers the full chain — affair evidence, sleep flag, confiscation, swap timing, and what not to sell to Nathan Kehler. Verified July 2026 (Alawar). Pair with the best ending guide, walkthrough, and endings hub.
| Keyword | Answer |
|---|---|
| beholder conductor replace gun | Swap Bart's live pistol with gold D.M. officer award gun |
| Bart gun swap | Same quest — silent Search on Bart's coat pocket |
| gold D.M. pistol | Harmless trophy from officer quest — decoy for Bart |
| ambassador assassination | Prevented when Bart carries the gold gun, not live rounds |
| Achievement | |
| Best ending tie-in | Required for Que Será Será — see best ending |
Mid-game Beholder Conductor shifts from ticket inspections to geopolitics. An ambassador staff travels first class while New Tomorrow operatives and Ministry hardliners circle the Determination Bringer. Bart — demoted conductor, bitter, still wearing an old uniform — receives orders to escalate tension with a live pistol hidden in his coat.
The weapon is not contraband you report for cash. It is story ammunition. If Bart fires (or if his gun discharges during the VIP chaos), the ambassador dies, diplomatic fallout spreads, and the finale narrows toward Mars Aeternum, Big Iron, or War Never Changes regardless of how cleanly you handle the locomotive fuse. The Beholder Conductor replace gun quest exists specifically to decouple Bart's personal vendetta from live ammo.
| Story beat | NPC / item | Gun quest state |
|---|---|---|
| First-class promotion | Bart patrols VIP | Live pistol equipped — no swap yet |
| Dining murder blackout | Henry Colt scene | Gather search notes |
| Ambassador luggage | Affair evidence | Bend Sinister unlocked |
| Confide in Bart | Post-evidence dialogue | Sleep flag — swap enabled |
| Coat search | Gold D.M. in inventory | Sunrise, Parabellum complete |
After Nova Express promotion, Bart paces near ambassador berths and the dining car murder scene. He comments on Winston's reports and hints at "unfinished business." Community guides map his route between VIP luggage and the first-class corridor — you need him stationary long enough for a Search action.
Unlike random passengers, Bart cannot be arrested for the pistol early. Ministry scripts treat him as an ally until the affair evidence surfaces. Attempting to confiscate before the Bend Sinister chain completes usually yields empty dialogue.
During the Murder on the Orient Express blackout, search ambassador-linked compartments. Winston finds proof of a forbidden affair — the Bend Sinister achievement flag. That dossier explains why Bart was handed assassination orders and why he hesitates.
Confide in Bart after the discovery. He reads his orders, chooses sleep over rebellion, and the game prepares the Sunrise, Parabellum swap window. Skipping the confession leaves Bart armed and motivated — the Beholder Conductor replace gun UI never offers a clean substitution.
Gun swap is one of five Que Será Será dependencies but stands alone mechanically: it does not require Jack the cat, rejecting Michelle, or the Trainmaster Key. Still, most clean runs handle all five — see keep the cat guide and Michelle route for flags that compete on the same save.
Bomb handling at Arnieo is separate — the bomb defuse guide covers fuse turns. Even a perfect right turn defuse cannot resurrect the ambassador if Bart kept live rounds.
The decoy is a gold trophy pistol engraved D.M. — a ceremonial award from an earlier officer quest, not a shop purchase. It cannot chamber live ammunition in-game; Bart's AI treats it as his assigned sidearm after the swap. Every Beholder Conductor replace gun guide agrees: locate this item before the VIP blackout or immediately after promotion, never after you need quick cash.
The gold D.M. pistol arrives through a first-class officer commendation side beat — search linked berths when Ministry prompts reward a "trophy sidearm" or similar flavor text. Exact compartment labels vary by language patch, but the item icon is distinctive: gold finish, no ammo counter, dossier tag D.M.
Confiscate it legally via Search + report if the game flags contraband, or accept it as quest reward when the officer thanks Winston. Stash it in inventory; do not leave it in a cabin drawer where cleanup scripts delete loose items between stations.
Some Beholder Conductor walkthrough routes note a duplicate trophy near the first-class crime scene after the Henry Colt murder — inspect officer memorabilia lockers during the blackout window. If you already earned the primary reward, you still need one copy in inventory at swap time; duplicates do not stack but reassure achievement hunters.
The walkthrough VIP table lists "Gold D.M. officer pistol — confiscate · do not sell" as a hard rule. Treat the trophy like the Trainmaster Key: sellable, but selling breaks the run.
Open inventory before approaching Bart for the swap. The gold D.M. entry should show zero ammunition and a ceremonial description. If only Bart's live pistol appears (after a failed pickpocket), reload — you may have searched without substituting.
After a successful swap, Bart's dossier still lists a pistol; inspect him again to confirm the gold icon on his character sheet in advanced guides. The game rarely announces success with a cutscene.
Performing the Beholder Conductor replace gun action is a single Search substitution once prerequisites are met. No minigame, no fuse panel — just timing and inventory hygiene.
| Step | Action | Fail signal |
|---|---|---|
| 1 | Find affair evidence | Bart stays hostile — no sleep dialogue |
| 2 | Confide in Bart | Skip — swap menu never appears |
| 3 | Hold gold D.M. pistol | Sold item — buyback from Nathan only if not sold |
| 4 | Search Bart's coat | "Nothing found" — reload pre-VIP save |
| 5 | Depart station | Ambassador death cutscene later — swap failed |
Finish the ambassador affair investigation. Present findings to Bart when dialogue offers "tell him about the affair" or equivalent. He retreats to sleep on his orders instead of marching on the ambassador with live ammo intent — internally flagged for Sunrise, Parabellum.
Wait until Bart patrols adjacent to ambassador NPCs — usually first-class corridor between VIP berths and dining car. Pause the station timer if needed; missing the window forces a reload from your pre-VIP save.
Ensure no unrelated arrest cutscene is active. Major Sargas lockdowns can freeze Bart in unreachable positions.
Use Search on Bart's coat pocket. With the gold D.M. pistol in inventory, the UI offers a silent swap: live service weapon out, trophy gun in. No achievement pop-up yet — Steam grants Sunrise, Parabellum after the scene validates.
If the menu only shows "nothing found," you lack the trophy, lack the sleep flag, or already swapped on this save. Cross-check inventory and confession order.
Before the train departs, optionally Search Bart again — advanced players verify the decoy stuck. Proceed to Frida Carr's New Tomorrow evidence if not already collected; gun swap does not replace bomb prep on the bomb defuse guide.
Nathan Kehler, the returning black-market vendor, accepts almost every spare item for cash. The gold D.M. trophy is high value — which makes it the number-one Beholder Conductor replace gun failure point on first playthroughs.
| Item | Sell to Nathan? | Result |
|---|---|---|
| Gold D.M. trophy (pre-swap) | ❌ Never | Ambassador death path open |
| Live pistol after swap | ✅ Usually safe | Quest already complete |
| Duplicate officer memorabilia | ✅ OK | Keep one trophy for Bart |
| Louise reward gun | ⚠️ Caution | Needed for Big Iron duel branch |
Once vendored, the trophy leaves Winston's inventory permanently on that save. Bart keeps his live pistol; the ambassador assassination proceeds; Que Será Será and ambassador-safe Big Iron branches close. The game does not spawn a second free trophy at Arnieo.
Many players sell the gold piece to offset Authority losses from keeping Jack the cat — budget smuggling profits or skip optional fines instead.
If you sold the trophy before learning the quest, Nathan Kehler sometimes stocks a replacement gold pistol at inflated price — community reports vary by patch and station order. Treat buyback as unreliable; reload an earlier save is faster for achievement hunters.
Never depend on buyback for Sunrise, Parabellum speedruns. Confiscate the primary reward and lock it in inventory before visiting Nathan's shop icon on the world map.
Duplicate contraband, spare gifts, and post-swap junk are fine. After the Bart gun swap, Bart's live pistol may appear in inventory — some guides sell that to Nathan; it no longer affects the ambassador. Do not confuse the live weapon pickup with the gold D.M. trophy before swapping.
[object Object] is the Steam badge tied directly to the Beholder Conductor replace gun quest. Unlock text: tell Bart about the affair so he sleeps, read his orders, and replace his gun with the gold trophy pistol.
Trigger Bend Sinister (affair evidence). Confide in Bart. Wait for sleep / orders-read flag. Perform the coat swap while holding the gold D.M. piece. The achievement fires on successful substitution — sometimes delayed until the next station load.
You can earn Sunrise, Parabellum without pursuing Que Será Será — for example on a run that accepts Ummagumma — but the ambassador must still survive the swap for the badge to matter narratively.
Que Será Será requires the same swap plus cat, key, Michelle rejection, and fuse right turn. Think of Sunrise, Parabellum as the gun-specific subset. Full dependency tables live on the best ending guide.
Failing the swap while meeting other four dependencies still produces a playable finale — just not the hopeful reunion. Cross-check the endings guide for Big Iron (swap required) vs Mars Aeternum (swap intentionally skipped).
The achievements guide slots Sunrise, Parabellum into "Run C — cat + best ending." Complete it on the same file as Que Será Será to minimize repeats. Dark-ending hunters skip the swap entirely for Mars Aeternum ambassador death.
The Beholder Conductor replace gun fork does not pick your ending alone — fuse choices, cat flags, and Michelle still matter — but ambassador survival removes the bleakest diplomatic branches.
| Ending | Gun swap needed? | Ambassador | Notes |
|---|---|---|---|
| Que Será Será | ✅ Required | Lives | Full best ending checklist |
| Big Iron | ✅ Required | Lives | Duel at fuse — see endings |
| Mars Aeternum | ❌ Skip swap | Dies | Ambassador death + fuse left arm |
| Chikhai Bardo | Either | Varies | Sacrifice speed — gun optional |
| War Never Changes | Usually failed swap | Often dies | Mixed moral collapse |
| Half Measures / demotion | N/A | N/A | Early authority game over |
Speedrunners chasing Mars Aeternum deliberately leave Bart's live pistol in place. The ambassador assassination cutscene plays; nuclear fuse choices hit harder. This is the inverse of Beholder Conductor replace gun — document your intent before VIP so you do not accidentally swap on a sabotage save.
Big Iron requires ambassador survival and a pistol in Winston's hands when Major Sargas duels — but the ambassador must not die to Bart. Perform Sunrise, Parabellum, then intentionally mishandle the fuse drag. Details on the endings guide.
A successful bomb defuse right turn saves the train even when the ambassador dies — but family reunion flags from Que Será Será still fail. Gun swap and fuse logic are independent gates merged only at credits.
Most beholder conductor replace gun searches come from players who met every other Que Será Será requirement yet still watched the ambassador die. These are the repeat offenders.
| Mistake | Symptom | Fix |
|---|---|---|
| Sold gold trophy | No decoy in inventory | Reload pre-Nathan save |
| No Bart confession | Empty coat search | Replay affair handoff |
| Swap after ambassador death | Too late | Reload pre-VIP save |
| Wrong gun for Big Iron duel | Sargas fight unavailable | Keep Louise gun or post-swap sidearm |
| Ignored achievement text | Miss Sunrise, Parabellum | Repeat mid-game on new save |
Top failure. The trophy's vendor price is tempting during cat-related Authority drains. Mark inventory before opening Nathan Kehler's shop during act 3.
Finding affair evidence without telling Bart leaves him on active assassination orders. The swap menu never appears; players assume the quest is bugged.
Early Search attempts do nothing harmful but waste time. Acquire the gold D.M. reward first, then return to Bart post-confession.
Nova Express opens VIP — not the swap itself. You need Bend Sinister + sleep flag + trophy inventory.
Winston may hold Bart's real gun afterward. Selling that is fine. Accidentally selling the gold trophy before swap is not.
Steam cloud and manual slots should bracket the Beholder Conductor replace gun arc. One clean file beats replaying seven hours because of a five-second vendor misclick.
| Checkpoint | Protects against |
|---|---|
| Post promotion | Accidental Ummagumma |
| Pre blackout | Wrong Henry Colt arrest |
| Pre swap | Nathan sale · missed confession |
| Post swap | Fuse experiments without VIP replay |
Slot A — post promotion: Before first Michelle cabin visit. Protects affair vs clean-run splits on the Michelle route guide.
Slot B — pre blackout: Before dining-car murder power loss. Recover Henry Colt search mistakes.
Slot C — pre Bart swap: After Bend Sinister confession, gold D.M. pistol secured, Nathan Kehler shop not yet opened this station. Primary Bart gun swap anchor.
Slot D — post swap: After silent substitution. Branch to bomb defuse prep or Big Iron sabotage without repeating VIP.
Cloud autosaves land at station boundaries — often after a bad vendor sale. Manual Slot C is mandatory for achievement hunters.
Swap Bart's live pistol for the harmless gold D.M. officer award gun during the ambassador VIP arc — required for ambassador survival and Que Será Será.
First-class officer commendation quest and/or VIP crime-scene memorabilia — see find gold gun. Confiscate early; do not sell.
Sometimes at high price after a mistaken sale — unreliable. Reload Slot C from save checkpoints instead.
Yes — [object Object]. Full wording on the achievements guide.
Ambassador assassination proceeds — Mars Aeternum and dark finales become likely. Que Será Será is impossible on that save.
Yes — ambassador must live via swap; then intentionally fail fuse handling for the Major Sargas duel. See endings.
Yes. Gun swap is independent — but Que Será Será still needs keep the cat and key plus bomb defuse right turn.
Ambassador lived, but fuse left turn or detonation confirm chose the nuclear path. Gun swap prevents ambassador death, not automatic best ending.
Use the walkthrough for act timing and the best ending guide for all five dependencies.
Matched by build plan, shared topics, and guide progression — not random related links.