Movement
M113 Speed and control are actually pretty nice when it comes to armour in PR. there are certainly less manoeuvrable vehicles so that's a positive aspect. however the vehicle is very noisy and attracts attention. Its usually ignored as a mode of transport by infantry squads and usually stragglers who dont join cohisive squads pair up in calm un-enthusiastic ramblings with the vehicle which ultimately just costs the team important tickets. I believe it is not responsable to suggest that an asset is being used improperly and that that is not a good enough reason for it to be removed/reinvented. It is the developer's responsablity to maintain a balance on the map and in my eyes as i have seen before with other vehicles this vehicle is unbalanced.
Weapon
While the .50 cal is powerful in the right hands it hasnt been deployed in a functional way to naturally protect the occupant in PR. Such as the HMG emplacement, it has 3 sides and a top and bottom and is fairly well protected, but even strays can kill the occupant when they are unlucky. The hmmwv has a shield on the front and the G-wagon has a shield all the way around, this is because these are modern versions of these vehicles. On the M113 the gunner is exposed and is a liability to his driver, once the gunner is shot, he is dead, once the gunner is dead the driver has no way to defend himself and has to solo back to base. Even on technicals where the gunner is almost completely exposed, the position of the .50 cal gunner's hitboxes are offset so getting an accurate shot is luckly not as easy as usual. But on the m113 for some reason the gunner is killed far easier than the technical gunner, which to me makes no sense, but from my own gameplay experience with both vehicles im convinced something is wrong.
In my last encounteres using the M113 i drove very quickly past a full squad, there is no surprise that, that is not the brightest thing to do, but what concerned me was how fast it was for regular infantry to insta-kill my gunner. This might be the high rate of fire or the accuracy of the AK74 combined with the exposure of the gunner on the M113. On kozelsk, the technical gunners are quickly dispatched when fired upon by the ak74 and so it appears to me that there is a close similarity between the two.
But .50 cal machines guns are supposed to be mighty and fearsome, and they are in PR, but only at range, because up close they have a risk to the gunner from regular assault rifles. I have always believed that the .50cal in PR is too much of a laser for such a high calibre weapon, and with no bullet drop it has been left to be a laser as a lesser of two evils, but this means there is naturally an inadequate spray in close quarters, and because suppression effect doesn't kick in until after 50feet the weapon pings off surfaces with no secondary effects of any kind. In short it is a one dimensional weapon that is mostly used for sniping with the emplacement, and on a vehicle because of the lack of vertical stability it is neither comfortable to aim with nor frightening to be shot at with.
My suggestions are as follows.
***The suppression effect for .50 cals should be more intense with it's spray at long range wider. with the M113 as a highest priority. Measures were taken in previous releases to widen the grouping for .50 cals, but i believe it is still inadequate. I know the UN use the M113 and it could feature prominently in African maps where there are jungles in the future, but with it's current setup it would be harassed by lone-gunmen prone in ditches at the side of the road.
***The gunner moved lower down in it's seat so he is more protected, because lets face it no person in their right mind would sit like that in a fire-fight. they would keep as low as possible without losing visibility down the barrel.
***Lateral stability (swivelling left and right) should be stabilised gyroscopic-ally for when the M113 turns so the gunner doesn't have to compensate so much.
***consider adding a shield to the gunner if not the sides then the front. make it a challenge to kill the gunner. Grenades make the M113 "black smoke" so it needs some help.
***a scope-in view distance modifier or optic for the M113 .50cal.
I realise at least two of these ideas go against the doctrine of PR, but the vehicle is nice to drive and to look at and adds an extra dynamic to Beirut, but it is grossly underpowered as a weapon of war and it's a laughable disgrace to let it go on this long. Please address these problems between now and the next release as I truly believe it would increase Beirut's game-playability a lot, and the level is a very fun and popular level and should deserve some attention.
Thanks very much for reading and I hope some DEVs agree with some of what I said.

Example of technical .50cal hitboxes



