About a month a go, I pulled the trigger and ordered a Daniel Defense DDM4 carbine. Now I'm reading about how a mid-length gas system is better and find out that Daniel Defense has just announced a gun but with a middy gas system. So, did I mess up by getting the DDM4 carbine? Are there any particular problems I should expect with a carbine length gas system. It just bothers me that I waited to buy the DDM4 only to find out they came out with a middy version weeks later. I guess I should have known when my dealer told me the DDM4 was on sale. Oh well...