“One shot, massive firepower—sidearm turned demolition tool.”

The GP‑31 Ultimatum is a single-shot grenade sidearm in Helldivers 2, packing explosive force capable of demolishing enemy structures, heavy armor, and large groups with devastating precision. The single high-impact shot and muzzle-loading design demand perfect aim—and exacts serious risk.

This item was handcrafted, hand-designed, and hand-altered with love—designed to bring its battlefield presence into your collection.

Handcrafted with Precision

Our replica reproduces the oversized barrel, grip guard, and stock assembly, complete with impact detailing and worn battlefield weathering.

• Scaled to match the in-game sidearm for cinematic display
• Static, non-functional model—ideal for display or cosplay gear
• Hand-painted and carefully assembled, with layered textures and post-blast finish

Perfect for Cosplay and Display

A bold heavy-hitting piece that adds tactical flair to Helldiver cosplay rigs, dioramas, or war-room showcases—where explosive presence means everything.

Key Features

• Inspired by Helldivers 2 – based on the GP‑31 Ultimatum grenade sidearm
• Accurate to game model – includes muzzle loader barrel, stock, and grip details
• Hand-painted and carefully assembled – with scorched and metal-worn finish
• Built to scale – perfect for loadout hands or shelf display
• Static prop – non-functional and presentation ready

⚠ This is a pre-order

This replica has not been produced yet—your order directly supports its creation. Pre-order now to reserve one of the first units and lock in a 50% early-bird discount before prototype production.

• 50% off for early buyers – only available during pre-production
• Your support helps fund the initial production run
• Prototype photos coming soon
• Price increases after prototype finalization

https://blasters4masters.com/product-category/helldivers-props-replicas/
Check out more of our Helldivers 2‑inspired replicas here:

https://blasters4masters.com/custom-orders-cosplay-commissions/
Want a custom design?

https://www.instagram.com/blasters4masters_official/
Check out what we worked on today: