These Guns ^ are Lancer assault rifles, one of the original weapons you get in the game are standard to the C.O.G, being powerful as is without the Chainsaw bayonet. The Chainsaw bayonet makes it twice as powerful, one shot kill, Kinda in-accurate but always kills in one blow. The earlier version is the Retro Lancer(look down v), An in-accurate but powerful weapon with a detachable knife bayonet at the end which has a shorter barrel than the original (making it less accurate). The Retro's bayonet is good for melee, and as I and lots of other players call a "Retro-Charge".
The next weapon ill show was the first gun you could use in the first game. it has gone through MAJOR modifications since the first game. From a 6-round burst to a Semi auto weapon, The Hammerburst (A locust counter-part of a Lancer) WAS more powerful than the lancer. They now share equal power but when it comes to accuracy, The Hammerburst wins with its zoomable iron sights which are just about as powerful as a Long-shot or even a One-shot scope. Here's some Shots of the Hammerburst v v.
Next up is the Snub Pistol, A Semi-auto pistol that is also standard to the C.O.G army. The Snub isnt very powerful but it is accurate and you can make it shoot faster by rapidly pulling the Right Trigger on your Xbox 360. The Snub overall is in my opinion the WEAKEST weapon when it comes to the bullet power/speed, but if your are looking for an accurate pistol this is the 2nd best choice.
The next and most accurate and powerful pistol in the game is the Boltok pistol, an 6-shot revolver that zooms in. The Boltok is the slowest shooting pistol and it's of Locust origin. On the kill shot, (3-4 shots to the body) you can pop their heads with a head-shot or down them and pull an execution.
Next up is the only machine pistol and my favorite pistol, The Gorgon pistol. The Gorgon used to be a five or six round burst action pistol, and now it's a fully automatic machine pistol. The Gorgon Actually has 2 cartriges on its sides which you flip down to reload. It's a Pseudo-replacement for the original Hammerburst and uses the cartriges from the GOW 1 Hammerburst. Here is the gun vv.
Next up, The Gnasher! The original (and only) shotgun for the first 2 games. The Gnasher shotgun is C.O.G originated and is very powerful at close range. It is able to blast Locust idiots away vv.