Quoted:
So, I am considering going away with the bayonet style for my dual Pitbull setup and I am thinking: what do I need to convert my Rhino II bayonet mount to a dovetail?

Thanks guys.

G.

Quoted:
If you want to be able to swap back and forth between the bayonet and dovetail on the Rhino II, just remove the REAR roll pin and leave it out.

Be advised that using the AKA2 dovetail adapter on the Rhino II is somewhat of a suboptimal solution because the front of the Rhino II is not cut out like the AKA2, so one must slide the adapter fully forward to access the release button.

<a href="http://s16.photobucket.com/user/murderman_/media/IMG_1332resize_zps6b2f25fa.jpg.html" target="_blank">http://i16.photobucket.com/albums/b42/murderman_/IMG_1332resize_zps6b2f25fa.jpg</a>

AKA2's come up for sale used in the EE and elsewhere for reasonable prices fairly often, and it is a better mount IMHO, so you might want to consider just buying one of those instead of just the dovetail adapter.

ETA - One could also cut out the front of the Rhino II if sliding the device forward whenever you want to remove it is a PITA to you.

Quoted:
There are a couple of key differences between the Rhino II and the AKA2:
-The R2 is FTO, and the AKA2 is push button.  I use an INVG [FTO] on my helmets, but prefer the AKA2 on the Nightcap.
-The pitch control is on the left for the R2, and the right for the AKA2.  I generally prefer the left, but "tolerate" it on the AKA2.
-The height adjustment is a lever on the R2, and a thumbscrew on the AKA2.  One is quicker, the other is arguably more precise.

Quoted:
If you prefer push button, then the AKA2 or the G24 would be the best choices.  The TATM is also push button, but the AKA2 is arguably a more refined updated version.