I have a cheap rimfire scope (Simmons .22 Mag scope worth around $50) that's on a Ruger American 22LR rifle. Will using this on an AR-15 (.223/5.56) ruin the scope due to the much greater explosive shock recoil? I just want to use it for 50-100 yards shooting. If not, what cheapest scope would you recommend for an AR? And by cheap, I really mean cheap. (Preferably less than $100 for no more than 100 yards of shooting at a range) Thanks in advance for your answers.