Manufactured by civilian defense contractor Stent Security Solutions, the R91 assault rifle is a conventional design chambered for 5.56mm ammunition. Gunsmiths in Appalachia and at Nuka-World managed to replicate the legendary weapon, creating a durable, versatile rifle that can be adapted for a multitude of purposes, including a squad automatic weapon, close quarters battle carbine, and sharpshooter rifle. Its reliability, ruggedness and accuracy have earned it the reputation of being the best assault rifle ever made. The piston, in turn, is driven backward, pushing the bolt carrier, which causes the bolt to move backwards, ejecting the spent round, and chambering a new round when the recoil spring pushes it back. As each bullet travels through the barrel, a portion of the gases expanding behind it is diverted into the gas tube above the barrel, where it impacts the gas piston. The bore and chamber, as well as the gas piston and the interior of the gas cylinder, are chromium-plated, dramatically increasing the life of these parts by resisting corrosion and wear. The large gas piston and tapered cartridge case design allow the gun to endure large amounts of foreign matter and fouling without failing to cycle. The main advantages of the AK-47 is its simple design, fairly compact size, inexpensive to manufacture, and easy to clean and maintain. It fires 7.62mm and utilizes a 24-round magazine.

The AK-47 is a selective-fire, gas-operated assault rifle developed in 1944 by Izhmash. Nuka-World, Fallout 76, Fallout Tactics, Project V13

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