Could somebody tell me what the difference between a Leupold standard one piece scope base and the Leupold quick release base is. It's clear why the QR base is called that but it seems to me that the standard piece base doesn't require a screwdriver either, shouldn't it also be considered a quick release What am I missing?
The question isn't rhetorical, I need to buy one for a Browning BAR rifle and I just need a suggestion. Please advice.

Sincerely,
Garen