I might be being a bit thick, but how does having a removable barrel make it lighter.... the old grenade launcher literally clips on and off like a bayonette... if it makes it too front heavy then don't mount it till you want to fire grenades and then flick it off when you are done.
Having a removable barrel just seems to complicate things in my view.
I did not say anything about a "removable barrel" so I don't know where you got this idea from? For me this is clearly a clip on underbarrel launcher. It is a lot smaller than the older versions and appears to be made from lighter materials. In that respect I consider it a nice bonus for guys who have to carry it around. Any foot soldier knows what I'm talking about.
Plus there is not much wrong with front heavy... most conventional rifles already are front heavy anyway.
Adding more weight just makes it more heavy. Adding additional weight to the front can make it harder to handle the weapon in combat conditions.
Yeah, have heard complaints about the poor accuracy of the AKS-74U, but the fact of the matter is that the barrels of the VSS and AS in 9x39mm have even shorter barrels and are reportedly quite accurate to 400m or so.
These are silent sniper rifles. Designed for a completely different purpose and the ammo type is also purpose designed for the silent sniper role. Now I know you get the AKSB74U-bs1-kanareyka Spetsnaz rifle, but we are talking about the AKS-74U here - specifically designed for crew members. This is NOT a sniper rifle (never mind silent!) and is issued with standard ammo to the crew.