I am revamping the M4. I put this older set of MOE's on there to try out the new light mount with the new ring design.
The light is a Surefire G2 with a shock bezel and a Z55 tailcap.
I was too quick for myself. I pulled the M4 side sling swivel off. I should have left it on to show that the two work together.
I really like the new ring design over the older one. I also like the position of the light. It works just great for my thumbs. Now I just need to update to a new set of handguards.
The M4 is waiting on an Aimpoint and a CTR. Its changed its furniture as often as I've changed my socks.