It works better the longer its fired so after about 150ish rounds its ok but We have it because
we needed a support weapon that was portable (more than the gpmg) and fired the 5.56mm as the lsw (l86) was sh*t, mag fed long and generally crap,
The Americans have their version which is better as the internal are slightly different too
we've had them for years and probably have some stupid contract for them for the next 40 years.
But they're belt fed and you can use a mag on them if you really need too but it ruins those too.