I have a G5 peep and I really, really like it. I haven't had a problem with the peep lining up...in fact, I took my tubing off when I put this peep on. I thought the blue color would be kinda weird, but I really like it. Your eye is drawn to the peep and things seem to get lined up quicker. I found my peep at cabelas for about $10. I don't think I will need to be worring about getting a different peep for quite some time...I really like this one!