for 60 bucks more you could buy a muller new.....lifetime warranty, decent glass and the turrets track better..
i had a barska 6.5-20x55mm varmint scope......i bought it for 39 bucks new to put it on a rimfire.......not bad for the money...that's what it's worth though..i don't have experiecne with the swat models....but fwiw, i returned the barska and bought a muller, much happier.
if you're going to do any kind of serious shooting, i wouldn't buy the barska.
for a 100 dollars I would save up another 60 dollars and buy a muller tactical series scope...the tac II has better glass but the others are fine as well.