If you get some pliers and squeeze the underside of the sight you should be able to pull it out.
If you're gonna glue the rear sight on put just a little because when you slide the sight on it will push the extra glue to the other side.
-julian
I recommend GGB, cause of the wide range of assesories, parts, etc. you can get for it. Personly I think GGB's are more reliable too. The only set back is Gas, but you can just get a propane adapter.
Edit: but GGB's REALLY empty your wallet Fast though
I tried paing the slide mate grey, But after I shoot it it has a sticky feeling cause of the propane. does enyone know How I could get rid of this? It's really bothering Me.