The Rail Gun build in Roblox’s Tank Game is one of the most sought-after setups in the entire experience – a powerhouse weapon known for its incredible long-range precision and devastating one-shot damage. However, unlocking it isn’t simple; it requires significant progression, strategy, and resources. In this guide, we’ll break down everything you need to know about getting the Rail Gun build – from the exact unlock path and shop location to gem farming methods, optimal parts, and advanced tactics. Whether you’re grinding to afford its hefty 75,000 Gem price tag or looking to master its sniping potential, this comprehensive walkthrough will help you unlock, equip, and dominate with the Rail Gun build like a pro.
Table of Contents
Follow these Steps to Get the Rail Gun Build in Roblox Tank Game
- Play and level your tank / progress the class tree. Progress Path through the early classes (example names in player guides: Watcher → Intruder → Default Obliterator) until the Rail Gun class unlocks. Keep earning XP by winning matches and destroying enemy tanks.
- Open the Tank Shop (in the hub/garage). The Rail Gun appears in the shop once your progression permits. Locate the Rail Gun listing there.
- Purchase it with Gems. The price as ≈75,000 Gems. If you don’t have enough, use the farming tips below.
- Build & equip: after purchase, go to the Build Menu and select the Rail Gun build (or add the Rail Gun turret to your saved build). Save and play.
Step 1: Exact unlock and purchase steps
- Play matches and earn XP by destroying enemy tanks and completing objectives.
- Specifically, you need to unlock: Watcher → Intruder → Default Obliterator in the class progression tree.
- After reaching Default Obliterator, the Rail Gun class becomes available.
Step 2: Buy the Rail Gun from the Tank Shop
- Go to the Tank Shop in the game’s hub / garage area.
- In the shop, locate the Rail Gun entry in the list of weapons / classes.
- Purchase it by spending your 75,000 Gems.
Step 3: How to farm the 75,000 Gems
- Play matches & complete missions: consistent wins and mission completions give XP and gems. Prioritize modes that give higher gem payouts.
- Use active promo / codes: the game releases codes (rotating) that grant XP boosts / Gems; check code posts or community pages (and the dev’s social links). Apply codes as soon as you get them.
- Daily login / events: participate in limited-time events and daily login bonuses — they often hand out Gems or boost earnings during events.
- Group / referral rewards: some versions give bonuses for joining the game group or inviting players — check the missions screen.
(Tip: farm in short sessions focusing on high-value objectives rather than random grinding — saves time and increases gem/hour.)
Step 4: Equip the Rail Gun Build
- After buying, go to the Build Menu / Build section in your garage.
- Select the Rail Gun build/class from your available builds.
- Optionally, customize the build with modules or attachments (like reload boosters or defensive parts) to optimize performance.
- Save your build setup.
Step 4: Use and Master Your Rail Gun in Battle
- In battles, position yourself at long range so you can snipe targets — the Rail Gun is most effective from distance.
- After firing, use cover effectively, because the Rail Gun has a slow reload / charge-up phase.
- Focus on priority / high-value targets — your shots are powerful but limited, so pick wisely.
- Consider working with teammates: while you’re reloading, more mobile or support tanks can protect you.
Recommended build components
Use the Rail Gun as the main turret; pair it with these hull / support choices:
- Hull: medium/heavy hull with decent health — you’ll still want mobility to reposition after firing.
- Mobility modules: moderate speed or dash module — to retreat after firing.
- Reload / charge modules: anything that reduces reload/charge time (if available) — they directly boost DPS.
- Aim/precision attachments: modules that improve projectile speed or accuracy.
- Defensive: small shield or armor module to survive while reloading (or teammate support drones).
- Secondary weapon (optional): fast-firing low-damage gun or missile to handle close-range threats.
Example concept: Rail Gun + medium hull + reload booster + small shield + mobility booster — you snipe, fire, then dash behind cover to reload.
Playstyle & tactics (how to be effective)
- Positioning: play from high ground or long sightlines. Avoid tight indoor/close-range maps.
- Target priority: pick high-value / low-mobility targets first (heavies, support vehicles, carriers). One hit can remove a major threat.
- Shot discipline: wait for fully charged shots; a premature tap wastes your longest cooldown.
- Peeking & cover: after firing, immediately move behind cover — reload/charge is your vulnerability.
- Team synergy: coordinate with fast teammates who can peel for you or create space while you snipe.
- Lead your shots: at range, aim ahead of moving targets; rail-type projectiles often have travel time.
Counters (how enemies beat you) & how to mitigate
- Close-range flanks / shotgun builds: Rail Gun is weak at close range — keep distance or carry a short-range secondary.
- High mobility bots: players that dodge/GTFO can negate your one-shot — pick slower targets or use teammates to pin.
- Lock-on missiles / spam: if the game has homing missiles, they punish stationary/charging players — use cover and mobility.
- EMP / debuff modules (if present): avoid getting disabled while charging.
FAQ
Q: I can’t see the Rail Gun in the shop after reaching the class—what do I do?
A: Relog, check if you met the exact class/rank requirement (some guides list precise class names), verify the game you’re in (there are several “Tank” games on Roblox) and consult the game’s Discord/wiki for version-specific guidance.
Q: Is the 75,000 Gems price exact?
A: Community guides repeatedly report ~75,000 Gems, but prices can change with updates. If you want, I can fetch the in-game shop tooltip right now (or check the game’s patch notes) and confirm the exact current price.
Hi, I’m Anshul Patel, author and co-founder of TigerJek.com. I am a long-time Roblox and mobile gaming enthusiast with 6+ years of gameplay experience. I test every method, build, and strategy personally before writing guides for TigerJek. My goal is to simplify complex games and help players progress faster.




