You would ask for the SPECIFIC clamp wouldn't you? :-D

Unfortunately I'm away from home and can't check on it for you. However, if you call RRS and tell them you have their L bracket and a Cotton .... Before you finish they'll be telling you the clamp you need. They have been asked a number of times!

Don't let their price scare you off. The clamp they recommend is so precision made and works so smoothly it is astonishing.

I mounted the lug to it using a dab of blue loc-tite and with the clamp screw positioned up when seated in the harness. I find this to be a much more satisfactory solution than trying to use the adapter plate that came with the CC. With their plate the camera does not hang centered and it still gets in the way using the L bracket (and I could NEVER give up my L bracket)!

I bought the cotton carrier about a year ago and have been very pleased with it. It is very comfortable, and versatile for those occasions when I am hiking in terrain where a traditional backpack might cause problems or limit my access to my equipment (i.e. Sand dunes, wet environments).

It's number one advantage for me is the comfort it affords when I am hiking. It takes most strain off of my shoulders, and allows natural movement. I've had no problems with safety concerns. I make sure the insurance straps are always secure. The only close call I have had was when the camera slipped from my hand when taking it off the carrier to set it up on my tripod. The safety strap saved me. The drop was my doing not the design of the carrier.

The only negative I found with using a cotton carrier had to do with the fact that all of my camera bodies are equipped with L brackets. The lug of the carrier makes using the L bracket difficult. It results in the camera sitting cockeyed in the carrier, or you must go the route of detaching the lug each time you want to set the camera up on a tripod. The solution was to get an Arca Swiss clamp from RRS. I mounted the clamp to the lug of the cotton carrier, and simply fasten my camera into the clamp. It works like a charm, and with the safety straps of the carrier the camera is very secure while still being extremely accessible. As a result I can benefit from the comfort and versatility that the carrier provides.