TKOverKill

I ordered some parts yesterday to start a custom build and I have a quick question about the Delta Ring.

I want to put a Knights Type RAS floating rail on a M4 body, and was wondering what the difference was between the 2 kits pictured below? Do they install essentially the same way? Are both styles called Delta Rings, or is the bigger one called something else (picture 2)? Thanks.

Delta Ring Type 1
[attachment=117]

Delta Ring (?) Type 2
[attachment=118]

My project:

MGS4 Custom G4
[attachment=119]

I love this weapon from the game, and am going to try and build something as close as I can to it. I imagine I will make some mistakes on part sourcing, but I will start a new build thread when I gather the parts and get going on it, that way you can all tell me what I am doing wrong

Thanks for your help with the Delta Ring question.

I think the image of Delta Ring type 2 seems not to be called a delta ring.
It seems to be called a " Slip Ring" or "Knight's type Slip Ring".

I've seen a similar parts as following URL.
http://www.laylax.com/products/detail.ph...ct_id=3323

Thank You Kenzie!