ORIGINAL: Vabowman
I don't have a pin guard. I shoot an adjustable sight, It's called a sniper. Cross hair and dot. I just pull it back and it's lined up. This is the one.
What GMMAT was eluding to VA..
The pin guard in your case is the clear plastic "housing" due to the round nature of this pin guard you can easily make concentric circles via the peep, to ensure proper pin alignment from your anchor point.