The Warne Rear Peep Base can be left on the rifle. It serves as the base and the fully adjustable peep blade is behind the base. All you have to do is remove the scope and shoot.
The Ashley has to be installed after you remove the scope- if we are talking about the same thing...
Although the Warne is a standard peep- definately not a ghost ring it is a nice piece of work and very functional.
I mounted the Warne bases and QD rings on a Winchester Classic Stainless in .308 I had to play with the height of the front site so the peep could stay sighted with the scope in place alot of work but the results were worth it...
Unfortunately, I think Warne discontinued the Rear Peep Bases...