I have done a few of these from lighting, airsporter carbine, superstar and goldstar. TBH they arent as bad to do as you think.
Like has been said, tap the rail back with a peice of plastic until it comes back far enough to lift out. When putting back on I tend to put a little grease or oil where rail goes on to help it slide back on. I found that there's really no need to put any more pressure than hand pushing down before tapping it back on level with a rubber mallet.
Fozzy