AZPops, the two buttons do use different retaining rings.
f22shift, the $10 was to cover shipping, and they came down to $8. I think I'll go ahead and do that.
cyclesport, I really don't like the looks of the GITD rubber boots. I think the black looks better. Actually, my EagleTac d25c Ti has a GITD boot that I'd like to change to black rubber, especially now that I've installed 2 ice blue trits in the slots in the tail. I think I'd like to get an assortment of those rubber boot end caps and see if one works. Could you tell me a place to start looking. Might even have one for the v10r.
For now I've stopped carrying the v10r mainly because of the binding switch, and have been carrying the d25c. Another reason I've stopped carrying the v10r is because I'm about to send it off for some modding, so I'd like to enjoy using it when I get it back.