they are tough as hell. very durable. my one complaint with my mk4 is the turret clicks. they arent 1/4 moa clicks but they arent QUITE 1/4 inch clicks either leading to a little difficulty at longer ranges. ive got mine dialed in for 168grn bthp up to 600yds by just shooting at various ranges and recording results. if i had to do over i woulda gone nightforce which my next scope will be
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent