Originally Posted by Mr Pheer

Having served on many gun crews, and emplacing/firing the M2 myself, I recall that it was 85lbs alone, 127 lbs with it's tripod, maximum effective range against a point target was 2000 yards, and it has neither a stock or a scope mount. It has to be fired from a tripod or vehicle mount. You don't pickup or modify a heavy machine gun and turn it in to a shoulder fired sniper rifle, and then hit a human target more than 500 yards beyond the weapon's maximum effective range against such a target.