Is there a particular soft case for the Carbine that works well with a scope or red dot sight attached? It need not be an original military case. I can go look for one at my local gun store but I thought maybe one of you had found one that worked very well with the Carbine and accesories, I.E. multiple mags cleaning kit pouch and the like.
I have one marked Plano Gun Guard which is well padded and has 6 side pouches for mags or accessories. The side pouches are sized to hold 30 round AR mags. I originally bought this soft case for a Mini-14 with a scope which is just a little larger than a Carbine. Just make sure to add a couple of inches to the length of the carbine when figuring out which to order so it won't be too tight. Any of the "tactical" gun cases have room for an AR with a scope so there will be plenty of room to clear the scope on a carbine. They do make some for pistol caliber carbines or SBR's which would be too short though, so just be sure to get a case long enough. Believe I bought it on Amazon.
I found that a Ruger 10/22 soft zipper case fits the Carbine perfectly. I am using a DocterOptic red dot sight on my Quality Hardware carbine. It sits on an Ultimak rail. Case also easily carries 6 extra 15 round magazines.