I’m slightly familiar with the Javelin’s intent. But I wasn’t sure if it was a disposable system like the old LAW or the AT4. In any case, we’re talking about a more expensive, less versatile weapon system than the Barrett. One can hardly fire a Jav at a single target and hope one doesn’t obliterate a whole house whereas the .50 cal is more selective and more appropriate for subtle counterinsurgency “minimal force” requirements.
I doubt it - weight of the rifle alone is over 15kg, add in everything else they’ve got in their bergens and that’s too much. Much more likely is carrying a few LAWs or Charlie Gs between the patrol - more firepower for less weight. From my limited experience of UKSF (a previous section commander and a TA mate) they don’t go in for sitting around at long distances anyway.
Depends on the mission.
To some extent - .338 Lapua can apparently penetrate some level of body armour (probably Kevlar only rather than ceramic) out to 1000m.
Interesting, but the Barrett can do more than body armor…
Optics, tracks, etc. It might get a soft kill on a competent MBT, and would certainly give the sort of tanks such impecunious opponents would be facing a fit. I should really have said anti-armour, as it is certainly capable against lighter armoured vehicles.
Okay, it can disable an MBT, but right now that is least the worry of the people using the system…