INTRODUCTION

The M7SA3 Block III is a redesign of Halo's Integrally Suppressed SMG, M7S, because it wasn't in the newer games and I wanted to see it return. I aimed to solve a few fictional problems that could have been faced by the UNSC within the lore

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1. Elites and Brutes took too many bullets to kill with the original cartridge, 5.0x23mm. I chambered my design in 5.6x22mm.

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2. Caseless ammo has heat rejection issues in low-pressure or vacuum environments. Cased telescoped ammo ensured that the barrel had a more efficient heat exchange.

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3. Soldiers would lose their helmets in war and would need to keep track of their ammunition easily. I added a lightweight digital and physical mag counter for easier ammo management.

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4. With no helmets, soldiers must start to ADS again. I added a larger reflex sight with in-built Fire Control Systems and Stabilisers to manage the firearm's slightly higher recoil due to heavier cartridge.