RX-1 Rail Gun

High powered weapon firing super-charged, armour-piercing ammunition. Effective versus heavily armoured targets (but not tanks) and capable of immobilizing (partially) organic enemies.

Weapon Stats
Helldivers start with 4 magazines of Rail Gun ammunition, and can carry up to 8. Each magazine contains 5 rounds. If 1 round remains in the magazine when the weapon is fired, the 'low ammunition' warning sound will play.

Reload time for a fully emptied magazine is 2.5 seconds; if reloaded while there are still rounds in the magazine, this drops very slightly to 2.25 seconds. The Rail Gun is not capable of retaining a round in the chamber.

Unlock Requirement
The Rail Gun unlocks at rank 14.

Unstoppable Rounds
A major difference between the Rail Gun and other weapons is that its upgraded rounds travel through targets they damage, similar to how the SG-225 Breaker shotgun and the AR-20L Justice assault rifle function. Such weapons are somewhat less useful against the Illuminate's shielded units, since the shields must be downed before the shots will penetrate further. Be wary of friendly fire: it is very easy to hit other Helldivers if proper firing discipline is not observed. This tends to occur most frequently when engaging enemies from both flanks at the same time. To maximize damage output, try to bait enemies into lining up (also known as 'kiting') so each shot will hit multiple targets in a row.

Stun Rounds
When upgraded with Stun Rounds, the RX-1 can also stun heavy organic foes such as the Behemoth and Impaler. Pairs well with the RL-112 Recoilless Rifle, M-25 Rumbler and EAT-17 as a result, and makes it much easier to get The Element Of Supplies trophy/achievement.