My bubble level is offered in two configurations for both right handed and left handed shooters.  The first configuration uses 3M auto tape for attachment.  And now a second configuration is available that utilizes a long screw and a zip tie for attachment.  It’s specifically designed for Ravins and is larger than many others that are available in the market place.  This allows the shooter to see it when there’s less light like when hunting early in the morning or late evenings.
 
I’m a big believer in using bubble levels, especially on Ravins since they are so narrow.  Generally speaking, your windage error will definitely be reduced if you utilize a bubble level.
 
New R470 Bubble Levels are now in stock.
(Please see the June 2025 video on my New Products page for further details.)