I have an important suggestion to make: all the weapon models I have seen thus far on the ModDB and otherwise seem to be based solely on the real life weapons, like the Spas and Deagle. My suggestion is to, instead, merely edit the original weapon models and add details to them that were previously not there, while also treating the sounds in that same way. The recognizeability of the Deagle and it's laser sight's sounds aren't worth throwing away for realism in my most honest opinion.
As for things like the M249 SAW, which in OpFor had the reload happen off-screen because the bullets clipped through the gun, you can fix that without making it like a real M249 - just add a gap through which the bullet go through to get to their intended position. No need to remove the recoil that pushes Shephard back or the low accuracy, both just add to the usefulness of the weapon (you can shoot it while jumping backwards to gain momentum, fun stuff).
Or the Shotgun/SPAS-12, just add an in-game explanation for how it works, such as that the tip of the chamber is separated from the back which has a mechanism to load both the barrel and the last part of the chamber, which serves as the secondary barrel, and which only gets fed if the primary barrel is fed as well, otherwise having the shell go back up to the primary barrel.
The Deagle is one a lot of people miss the point of. Yes, it has no sights, that's why you have to use the laser sight to be accurate. Having it have iron sights but still be inaccurate makes no sense, and making it accurate without the sights breaks the balance and nearly inutilizes the laser sight.
The Glock you simply have to have the see-through magazine and the other details from the original that make it different from an ordinary Glock.
Things such as this are very important to me, and it would mean the world to have such imagery be faithfully conserved and remastered, especially considering how faithful the concept arts for the grunts themselves are.
Opfor, or real life?

As for things like the M249 SAW, which in OpFor had the reload happen off-screen because the bullets clipped through the gun, you can fix that without making it like a real M249 - just add a gap through which the bullet go through to get to their intended position. No need to remove the recoil that pushes Shephard back or the low accuracy, both just add to the usefulness of the weapon (you can shoot it while jumping backwards to gain momentum, fun stuff).
Or the Shotgun/SPAS-12, just add an in-game explanation for how it works, such as that the tip of the chamber is separated from the back which has a mechanism to load both the barrel and the last part of the chamber, which serves as the secondary barrel, and which only gets fed if the primary barrel is fed as well, otherwise having the shell go back up to the primary barrel.
The Deagle is one a lot of people miss the point of. Yes, it has no sights, that's why you have to use the laser sight to be accurate. Having it have iron sights but still be inaccurate makes no sense, and making it accurate without the sights breaks the balance and nearly inutilizes the laser sight.
The Glock you simply have to have the see-through magazine and the other details from the original that make it different from an ordinary Glock.
Things such as this are very important to me, and it would mean the world to have such imagery be faithfully conserved and remastered, especially considering how faithful the concept arts for the grunts themselves are.
Opfor, or real life?