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Description
The M28 assault rifle was a bullpup, air-cooled, gas-operated, selective fire assault rifle in use with the United Nations Space Command during the Galactic War and Swarm War. The M28 was chambered for the 7.62x51mm NATO full power rifle cartridge, which gave it significant stopping power and range whilst being suitable for controlled, accurate automatic fire. Design of the M28 was initiated in 2620, following the 2619 Strategic Defence Review, which called for military escalation and rearmament as a result of increasing galactic tensions. Production of the weapon began in 2625, three years into the Galactic War, and the M28 gradually replaced the MA6 assault rifle as the UNSC's service rifle over the next five years.

The M28 was designed from the start with modularity in mind, and featured three baseline variants with interchangeable recievers, barrels and gas systems. These variants took the form of the base rifle, acommodating a 22 inch barrel, as well as a designated marksman rifle with a 26-inch barrel and a shortened carbine with a 16.5-inch barrel. Parts and ammunition commonality between the variants was a major consideration in replacing a number of separate weapons systems with a single rifle family; as was the significant weight savings the M28 made over its predecessor, the MA6.

Drawn in Inkscape. Download for larger image!

The design for this weapon is based on work by the fantastic ~Bonez18B (specifically the M22 personal defence weapon and M7 AMAW-C ), who gave permission for me to create derivative works. Neither he nor I give permission for this or any other images to be used without permission, so don't do it!

Description
The M28 assault rifle was a bullpup, air-cooled, gas-operated, selective fire assault rifle in use with the United Nations Space Command during the Galactic War and Swarm War. The M28 was chambered for the 7.62x51mm NATO full power rifle cartridge, which gave it significant stopping power and range whilst being suitable for controlled, accurate automatic fire. Design of the M28 was initiated in 2620, following the 2619 Strategic Defence Review, which called for military escalation and rearmament as a result of increasing galactic tensions. Production of the weapon began in 2625, three years into the Galactic War, and the M28 gradually replaced the MA6 assault rifle as the UNSC's service rifle over the next five years.

The M28 was designed from the start with modularity in mind, and featured three baseline variants with interchangeable recievers, barrels and gas systems. These variants took the form of the base rifle, acommodating a 22 inch barrel, as well as a designated marksman rifle with a 26-inch barrel and a shortened carbine with a 16.5-inch barrel. Parts and ammunition commonality between the variants was a major consideration in replacing a number of separate weapons systems with a single rifle family; as was the significant weight savings the M28 made over its predecessor, the MA6.

Drawn in Inkscape. Download for larger image!

The design for this weapon is based on work by the fantastic ~Bonez18B (specifically the M22 personal defence weapon and M7 AMAW-C ), who gave permission for me to create derivative works. Neither he nor I give permission for this or any other images to be used without permission, so don't do it!