Randy I'm not sure if this helps but there are a couple of resin sets of sniper rifles made by the company Tank that may be of some use.
If they fit the bill I'm sure there is somewhere in the states you can get them from..
http://www.bnamodelworld.com/figure/figure-aftermarket-sets/weapons-ammo/135-nato-modern-sniper-rifles-family
http://www.bnamodelworld.com/figure/figure-aftermarket-sets/weapons-ammo/135-american-modern-sniper-rifles-family
Cheers