Who can introduce the performance of PGW LRT-3 12.7mm sniper rifle?

I don't know what happened to broadband recently, and I can't get on the English website. Find the information on the Russian website, let's guess: the LRT-3 sniper rifle produced by PGW Company uses a half-inch Browning machine bullet (50 BMG) and five magazines of the bullet. Rifle distance 1: 15, barrel length 736 mm, shooting accuracy 0.5MOA, effective range1800m.