"designated marksmen" would not be used. That is a modern (?)
US Army term, and "designated marksmen" were not part of the
British section organisation in the 1980's which the Everon forces
organisation is based on.
Everon Self Defence Force snipers (with 1980's equipment) use
the British L42A1 (from the Malvinas Mod), although the SLR
with 4x SUIT sight is a pretty good "sharpshooting" rifle in it's
own right. I use the British rifle because given their supposed
affiliation with the Royal Marines I assume that they would have
received sniper training at Specialist Wing, Commando Training
Centre, Royal Marines at Lympstone in England. Yes, those
bewildered foreign-looking boys and girls you might have seen
on the platform at "Lympstone commando" railway station were
probably just off the 'plane from Everon.
66mm LAWs and Carl Gustavs serve adequately as "RPG"s.
Oh, and by the way, Everon is a former British colony. The
Soviet invasion in 1985 was resisted by the ESDF, Naval Party
8906 Royal Marines, D coy. 2nd Batt. 51st (Highland) volunteers
(TAVR) and the Chipping-Sodbury Young Ornithologists club
(Everon is world famous for it's avian fauna).
The islands
were re-taken by a "task force" composed of 2nd Batt Parachute
Regiment, 40 and 45 cdo. Royal Marines, 5th Gurkha Rifles and
supporting logistics, air and naval forces. The US involvement in
the resistance and liberation of the islands is a gross exaggeration.
...and the bird-watchers were all repatriated safely, enjoying the
chance to go home on the QE2 for free (albeit full of grubby soldiers)