What size cover would you recommend for a Saker 556 that has a direct thread mount and measures approximately 6.3"? Is it better to go with a slightly larger cover to help cut down on heat mirage? It's going to be shot mainly on a Rem 700 .223 and also on an AR. The cover comes in either 6" or 7".

I have the MAD cover.

Go longer rather than shorter.

Recoil causes the covers to slide forward. To prevent this, you can use a longer cover and hang it over the back of the silencer and tighten it down more and keep it from sliding forward under recoil. I pulled the paracord tight around the rear of the cover to keep it from moving.

Now, that's not as bad on 5.56 as it is on 308, but still a good idea in my opinion.

Also, if I had to buy another cover, it would be another FTW. Great cover. My friend bought the Armageddon gear one and wishes he bought the FTW.

I bought a FTW had for my .30 Ti Phantom. It seems like it will definitely help handle suppressor while it's hot but it added a lot of weight to a suppressor I paid extra for to be light. It also added a lot of bulk. I kept it but don't keep it on the suppressor normally. If I am going to put a lot of rounds through the can I will put in on. I got one for exact length of my can. If you can't get one for exact length then you'd want to go to next shortest size not larger.

Thanks for the info guys.