Buy the KL545 MK1 first for $31,000 total ($25,000 authorization + $6,000 gun), then push it to the 45-round MK3. Endgame picks: RC 5.56 MK3 for all ranges, AP Scaler MK3 for CQB, LM249 MK2 for suppression.

Best Guns by Role

These are our top picks for each combat role.

Take the RC 5.56 MK3 if you can only afford one endgame gun.

How Weapon Purchases Work

Every gun costs two payments: a permanent authorization fee and the unit price. Paying the fee alone leaves you with an empty slot.

• KL545 MK1 example: Pay $25,000 for authorization, then $6,000 for the gun itself.
• Pro tip: Never enter the shop with less than both payments combined.

S Tier: Best Guns in Rob Run

S-tier guns earn full MK upgrades because they fix capacity limits or hit lethal kill speeds. Raw DPS here is Damage × RPM ÷ 60.

Damage per magazine and reload exposure decide outnumbered fights, not raw DPS.

TAG12K MK3 (S): This 8-shell shotgun fires at 240 RPM and clears rooms fast, but costs far more than the ODR12.

A Tier: Strong Picks Below Meta

• JP7 MK3: 15 DMG at 750 RPM gives 187.5 DPS, beating the RC 5.56 on paper for mid-range tempo.
• KL545 MK3: The cheap MK1 entry scales to a 45-round rifle, the best early-to-mid investment.
• Star H MK3:21 DMG per bullet rewards controlled headshot taps and punishes CQB spraying.
• ODR12 MK3: It matches S-tier per-blast shotgun damage at a fraction of the price, but one miss gets you killed.
• PDW9 MK3: The 50-round mag forgives misses, while low per-bullet damage struggles against armored targets.

Head-to-Head Matchups

RC 5.56 MK3 vs. Senior Reaper MK3

• Buy the Reaper: Its 212.5 DPS beats the RC 5.56 by 19.5%, winning isolated head-on trades.
• Buy the RC 5.56: Ten extra rounds give 800 damage per mag against the Reaper's 680.
• Pro tip: In our back-to-back fight testing, that extra 120 damage downed a second attacker before the reload.

AP Scaler MK3 vs. LM249 MK2

• AP Scaler discipline: Hold fire until you are inside room range, because pre-firing at 1,000 RPM burns half the mag.
• LM249 reload timing: Break line of sight with 30–40 rounds left and reload behind hard cover.
• Pro tip: We never drain all 200 rounds in the open, since the near 5-second reload is a death sentence mid-push.

B and D Tier: Fillers and Starter Guns

Treat these as stepping stones or free pickups, not cash sinks.

Spend zero upgrade cash on D-tier sidearms.

• CB45 vs. MC10: Pick the CB45 for paced bursts and the MC10 only for barrel-stuffing ambushes.
• Vulture 50 trap: Run its 7-round mag only behind teammates who hold the front line.
• Pro tip: No gun sits in C tier in our testing, so jump straight from B-tier fillers to A tier.

Cash Progression Route

Weapons also spawn as world loot across the city and rotate through the black market. Check both before paying shop fees.

1. Phase 1 ($0–$31,000): Run the DP9 or street guns, buy nothing else, and save for the KL545 MK1 in one trip.

2. Phase 2 (Mid-game): Upgrade the KL545 to MK3, or grab an ODR12 if your routes force indoor fights.

3. Phase 3 (Endgame): Specialize by route type.

• Mixed city and interiors: Buy the RC 5.56 MK3 first for the best cost-to-versatility ratio.
• Building raids: Buy the AP Scaler MK3 or TAG12K MK3.
• Holdouts: Buy the LM249 MK2 and fight from hard cover.

Pro tip: A maxed KL545 MK3 outguns a fresh MK1 specialty weapon, so swap only when you can fund the full upgrade path.

What is the best first gun to buy in Rob Run?

The KL545 MK1 at $31,000 total. It upgrades into a 45-round MK3 rifle that carries you through mid-game.

Why can't I equip a gun right after paying for it in Rob Run?

You paid only the authorization fee. You still need the unit price on hand, such as $6,000 for the KL545 MK1.

Should I buy the JP7 MK3 or save for the RC 5.56 MK3?

Save for the RC 5.56 MK3. The JP7 has higher DPS (187.5 vs. 177.9), but the RC's 800-damage mag handles multiple targets.

Is the ODR12 MK3 viable instead of the S-tier shotgun?

Yes, if your aim is consistent. It matches the TAG12K's per-blast damage for less cash but fires slower, so peek between shots.

When should I drop the KL545 MK3 for an S-tier gun?

Switch once you can afford the S-tier gun's authorization fee and its full MK3 upgrades. A fresh MK1 is a downgrade from a maxed KL545.