u not looking hard enuf

usmc is already working on saw replacement, the IAR while the army is doing their best to waste public money on some convoluted mg design.

china oso had its take on IAR. HK is working on its take on machine gun that can fulfill both lmg and gpmg role while russia have already started deveopment for pk mg replacement

Not to mention other countries like czech,  polen, south africa and even pakistan who each had either started new mg development or already come up with new design to replace their old ones

pic is china new lmg

If u study the pic, the MG pictured has a belt-feed system. See the side of the receiver where's a bit of shiny metal peeks through? This is from the rub of the belted ammo on the metal as it feed into the MG.

The box mag is probably used as some kind of secondary feed system, like the one the M249 has. It can use both belted and boxed ammo feed.

what gun is that

it's like a homemade gun made using PVC pipe, attached with buttstock 

Already stated that it is a Type 85 silenced SMG. The weird pipe-like look is because the entire barrel is a built-in silencer assembly.

they just didnt put it in, all the guys holding other kind of rifles in the pic also didnt put their mags