We fired the HK M27 IAR the other day. We can easily keep 3-4 round burst on a 200m man sized silhouette. After the dust settled, the recticle would stay back on the original POA (if you have a good idea on how to shoot a MG on bipod). This is one lethal automatic rifle. I admit that I could never do it with a FN LMG.
+1The forend on the G28 looks like it'd add quite a bit of weight.
Holy hell they hang a lot of stuff on those rifles. Any idea on rifle weights with the steel receiver?