The Chain SAW Light Machine Gun has the fastest fire rate but lowest accuracy, range and damage of the light machine guns. You can only fire it from the hip meaning that at long range it will be unlikely you can hit anything. Because the Chain SAW has low mobility and slow handling you need to stay a bit defensive with it. It is good at holding down a position and can take on multiple enemies at once.
The Ameli Light Machine Gun has the second highest accuracy with the highest damage of all the light machine guns. It has fairly high range but a low fire rate and mobility.
The Ameli is best at medium range but also works well at long range and short range if you are prepared for enemies.
The USR Sniper Rifle is a bolt action rifle. Compared to the L115, which is the other bolt action sniper rifle, the USR has better accuracy, range, fire rate and mobility. However it’s damage is lower. The USR is deadly from the waist up, even though it is not as strong as the L115.
The L115 Sniper rifle is one of two bolt action sniper rifles. It has the higher damage of the two sniper rifles. However, its accuracy, range, fire rate and mobility are all slightly lower than the other sniper rifle. The L115 is good at both long range and close quarters using a quickscoping setup.