American Browning M2 heavy machine gun, a popular heavy machine gun, is a kind of heavy machine gun developed by American 192 1. It is one of the most famous large-caliber machine guns in the world and has been equipped by the armies of more than 50 countries. M2 Browning machine gun has been affectionately called "domestic" by American soldiers since it came out.

M2 heavy machine gun has a long history, and it was used from 192 1 century to 2 1 century. Browning M2HB 12.7mm9(0.5 inch) vehicle-mounted heavy machine gun is a veritable' antique' weapon and the most representative old gun.

As a masterpiece of firearms master Browning, M2 heavy machine gun is a magic gun, and its position in the US military is unshakable up to now, but it is still in production, with a total output of more than 3 million. The U.S. Army is named M 192 1 and is equipped with water cooling device. A hydraulic buffer is added to the gun to absorb the excessive recoil of the barrel. The oil flow in the hydraulic buffer is adjustable and the firing rate changes with the flow.

In design, M2 adopts large caliber 12.7×99 NATO (50 BMG) ammunition, which has the advantages of high firepower, stable trajectory, extremely long range, powerful power and high accuracy, and the firing rate is 450-550 rounds per minute (600-1200 rounds per minute in World War II version).

However, due to its huge size, the gun is mostly used in fire positions set up by infantry, vehicles, tanks and armored personnel carriers. It can also attack light armored targets and low-altitude air defense targets.

M2 heavy machine gun, with total weight of 38.2kg (empty gun), 58.2kg (with tripod) and 50BMG (empty gun without tripod), total length 1653mm, barrel length 1. 143mm and ammunition12.7×

With the development of time, there are also various improved models of M2 machine gun, M2HB: M2 heavy gun tube model. M2HB-QCB: Quick change of barrel model. M3 (M3M/M3P): A variant of M2HB, which is often used in gun cabins of ships and helicopters. Ampere /M2 (Ampere /M3): Aircraft machine gun model.

With the progress of society, many modern weapons are used in modern wars. At the same time, many historical weapons have gradually withdrawn from the stage and completed their missions, but M2 heavy machine guns are still active in the modern battlefield.

While pursuing advanced weapons and equipment for the US military, it still has unique advantages. The reason why it has been used as a weapon is that it is very practical and versatile. Ammunition delivery methods and ammunition replenishment methods also cover almost all types, and can be used for one-way and two-way ammunition replenishment, and ammunition chain replenishment is completely unnecessary. It is widely used, showing its performance and perfect reliability. This is the M2 heavy machine gun, the immortal weapon "Evergreen Tree".