[Cosmos] Weapon - Hyperion Rail-7 (Patreon)

The Hyperion's Model 7 remains popular among rim runners even after 15 cycles, thanks to its low cost, reliability, and unique ability to transform any regular projectile into a piercing projectile. Empyrean Enterprises intentionally designed newer models with exclusive compatibility with special projectiles that were, though safer to use, much more expensive.

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Hyperion Rail-7Weapon (heavy railbow/heavy crossbow), uncommon (optional attunement) 

Hefty. This weapon can only be wielded by a creature with a Strength score of 15 or higher. 

Charge Shot. This magic weapon can launch projectiles at velocities that can penetrate targets. As an action, you can fire a single shot from this weapon in a 30-foot line originating from you. The projectile hits any creatures in the line, but cannot pass through barriers thicker than 6 inches. Make a separate attack roll against each creature hit by the projectile, dealing damage on a hit as normal. Once this property is used, it cannot be used again until you recharge it using a bonus action and succeed on a DC 15 Intelligence check. 

Optional Attunement. This weapon is powered by an arcane battery, which you can magically charge while you are attuned. Whenever you reload this weapon, you can expend a spell slot of any level to reload it instead of physically reloading the battery.