The FN SCAR is a gas-operated self-loading assault rifle with a rotating bolt. It was built as a highly modular gun, and allows various additions to be made from scopes to a grenade launcher. The FN SCAR is extremely useful in both short and medium ranges, and is used extensively by the U.S. Navy, who owns anywhere from hundreds of thousands to millions of these.
A heavier version of the rifle called SCAR-H is used by some U.S. military branches. The gun uses 7.62×51mm NATO bullets instead of the standard 5.56×45mm NATO ammunition, and is able to cause much more damage as a result of the ammo’s additional weight.
The Mark 36 SRBOC
Mark 36 Super Rapid Blooming Offboard Chaff, also known as "Super-arboc", is a short-range mortar used to foil incoming anti-ship missiles and cause them to miss their targets. Each launcher has six tubes that are arranged at different angles ready to fire the decoy system in case of an emergency.
These are used by 19 navies around the world, and consistently help save soldiers’ lives during combat. Super-airbags deploy decoys that help deter missiles infrared and chaff radar scrambling technologies. A typical launcher holds 20 to 35 rounds of these decoys, and can be found on most modern Navy ships around the world.
The Benelli M4 Super 90
Navy SEALs and other military units often use the Benelli M4 Super 90 during tight infiltration missions, and deploy 70 and 76 mm shells when fired, hitting a large area. One of the major advantages of the M4 is its integrated A.R.G.O. tech, which helps dramatically reduce the likelihood of it jamming during a mission, and makes pumping between shots much easier and more reliable.
The Benelli M4 Super 90 weighs 8.42 pounds and can hit up to 55 yards away. It holds between 5 to 7 rounds, depending on the model. This is an idle weapon for indoor hostile infiltration missions, as it doesn’t require too much accuracy to hit.
The B61 Nuclear Bomb
The most terrifying weapon in the United State Navy's arsenal without a doubt, the B61 nuclear bomb. After the Cold War ended, Uncle Sam was left with more than 3,000 of these. They were promptly cached into an unused arsenal of weapons, often called The Enduring Stockpile. It contains about 23,000 deadly weapons from the time nuclear weapons were still legal.
The B61 nuclear bomb has a maximal yield of up to 340 kilotons. It weighs about 700 pounds and causes untold chaos. The United States is opposed to the use of them, and actively hunts down the last free remnants of these bombs.
The Phalanx CIWS
The Phalanx CIWS, otherwise known as Sea-Wiz, is a close-in weapon system that destroys hostile anti-ship missiles and helicopters. It’s the last line of defense for U.S. vessels and can save units from incoming missiles. They fire a rapid succession of bullets and use a computer-controlled radar to hit their targets automatically.
The Phalanx is outfitted on almost all of the U.S.’s Navy ships and usually holds the aforementioned M61 Vulcan cannon. The combination of these two creates an extremely potent defense system and helps save many lives.