One thing that may have been said about the M44 Pulse rifle is that it is more advance and yet is a prequel fire arm to the more famous M41 Pulse Rifle.

I have seen some wonder why the M41 does not use the same auto aim feature of the M44 or why it didn't adopt said feature. And to that I will be using historical analogies featuring the real life Marine Corps as reference.

The M44 was a complicated and advance prototype, something that the Colonial Marines likely tested and tried out in a weapons service trial to decide on the new rifle platform. It might be possible that the Colonial Marines liked some aspects of the M44, such as it's relatively high damage and ammo capacity, but likely saw issues with the auto aim being costly for such a common weapon.

As such the M41 was likely preferred taking what  the Marines liked from the M44. However they would not let the auto aim feature go completely to waste, as we see the Smart Gun feature this very well established feature. It is likely the Colonial Marines saw this feature as a good option for a more specialized weapon, such as an LMG instead of a rifle.

Now some may wonder if this has basis in real life, and to that I say yes. The Marine Corps IRL actually had trials of new weapons systems during WW2, specifically the M1 Garand. During trials the Marine Corps was concerned about the M1 not being as reliable as the current Spring Field, which was currently in service. It would be not until the later end of WW2 that the Marines would adopt the M1 Garand.

It is likely that the Colonial Marines saw the M44, and decided to go for a more reliable option, having the M41 be made with a more reliable magazine, underbarrel launcher for grenades and shotgun shells, as well as a much better ammo counter.

The M44 would likely be adopted by ship board security forces, as the auto aim feature would be better for preventing hull breaches via missed shots.

A look at the Colonial Marines and the M44 and M41 Pulse rifles.