THE VALMET 78\83 IS A 7.62MM X 51MM COUNTER SNIPER WEAPON. Available only as a stamped receiver version.
One of these rifles appeared in the Arnold Schwarzenegger movie Commando. Some how in that movie the gun was equipped with a 5000 round magazine... Sadly at this time we have been unable to procure one of those preban mags. But since everything in Hollywood is true they must exist...right?