Arms Material

Arms Material is a brand or series of firearms produced during the 70s and 80s. The main output was a series of rifles and carbines used by Big Boss's mercenary forces and within certain areas of the US military.

List of firearms
AM MRS-4 Rifle: Officially the Arms Material Multi-purpose Rifle System model 4. Designed for infiltration missions, this compact carbine with a shortened barrel is equipped with a light and a suppressor. Its suppressor emphasizes reduce weight, meaning lower durability. In addition, its shorter barrel make its effective range shorter than that of others. Equipped with a light and a suppressor. It replaced the M16A1 as the standard assault rifle of MSF after the Peace Walker Incident.

Ground Zeroes The Phantom Pain
 * Obtained from the start
 * Found in armories and guard posts in Camp Omega.
 * Obtained from the start.

AM MRS-4 Rifle (SL): [AM Multi-purpose Rifle System model 4 (Special Light.)] Same basic properties as a standard carbine, but this model features a flash light with a unique function that erases markings when shined on.

Ground Zeroes The Phantom Pain AM MRS-4 Rifle M3: [AM Multi-purpose Rifle System model 4 Mod 3.] A customized version of the standard carbine, equipped with a red dot sight, a magnification device, and under-barrel grenade launcher attachment. Used by Big Boss and Diamond Dogs during the 1980s.
 * Found in the Admin Building armory in Camp Omega (Déjà Vu and Jamais Vu missions only).

Ground Zeroes The Phantom Pain
 * Does not appear in this game.

AM Rifle Type 69: [Arms Material Rifle Type 69.] The main service rifle of the U.S. Marine Corps personnel stationed at Camp Omega. Its longer barrel well-suited to the combustion properties of it ammunition, gives it an effective range greater than that of the carbine model. However, it can also make the weapon harder to handle in tight spaces.

Ground Zeroes The Phantom Pain
 * Obtained from Marines.

AM-69 AAS Rifle: [Arms Material Type 69 Advance Assault/Support Rifle.] A Custom assault support model of the Type 69 assault rifle, equipped with a under-barrel grenade launcher and three-step variable-magnification scope.

Ground Zeroes The Phantom Pain
 * Obtained at the start (Intel Operative Rescue).
 * Unlocked at the start by getting a "B" rank or higher in a mission.