MG3 suppresses like anything....ok let me narrate a funny incident from 2013....
somewhere in SWA...
a post having three Dshks and 6 MG3s....a dry nullah coming towards towards your post....post was on a hilltop...
one night, while looking out of our TI sights, we detected an enemy party of maybe a dozen or so individuals coming towards the post for God know s what......now there was a place where they HAD to cross the 300 m wide dry nullah.....they were detected and sprayed by MG3s and Dshks.....tracers all around, they retreated, pounded by 81 mm mortars on their return, couple of injured as well....
since they transmit mostly in clear, so once they retreated a bit, their commander who was perched somewhere nearby on a hill top, ordered them again to move forward....the other chap, being wise enough after having been plastered by so much firepower, said in breathless tone.... (name) maulvi saab, khud aa ker humaray saath chalo, jab 12.7 ki goli qareeb se guzarti hai tau kia kuch yaad dila deti hai.....lolx.....and we all laughed at it....
its a bad situation if you get pinned down by auto fire ( may it be SMGs, MGs or even Dshks).....Dshks especially, with its anti-infantry range of 3500 m, it plays havoc with your nerves.
i somehow lost a vid in my collection...
it was around 2012, terrorists used to make vids of their attacks on PA posts as well.....
in the vid, the terrorists try to creep near to a PA post.....however, somehow they get detected, and two MG3s open up with tracers.....the terrorist cameraman went berserk with incoming tracers clearly visible, hitting all around them....terrorists suffered couple dead.....
MG3s, their fire and their sound.....marvelous.....their effect, devastating.