The goal of this article is to address weapon balance issues observed and discussed among players since Halo CE's release years ago. Halo 1 is much better balanced than Halo 2, but that's not saying much.
The primary criticism is that the majority of the weapons in the game have a massive deficiency in accuracy which makes them useless compared to the Pistol, Rocket Launcher, and Sniper Rifle. Sure, there are niche situations where the Assault Rifle, Plasma Rifle, Plasma Pistol, and Needler are somewhat useful, but they are far and few between. They are meant for close range encounters, but with spreads of 5-6 degrees a significant portion of their damage output doesn't make it to the target even at shorter distances, and weapons like the Pistol can easily outgun them even where they are supposed to excel.
Thus, a mod has been made, the majority of the changes geared towards reducing the spread values of the weapon set as a whole, making the non-pistol and non-sniper rifle weapons more evenly effective at mid-range so that using these weapons effectively is more skilled than rock-scissors-paper spray-and-pray, and the game is more varied than the pistol-exclusive duals we're used to.