VFC SOPMOD-M4-ported Cyliner Or non-Ported

[CGX]

Anyone know If the VFC SOPMOD -M4 has a Stock Ported cylinder ?
Or a Non-Ported? I might assume a non-ported? because its Quite a long
barrel set up? My concern was If I purchase this rifle and swap out the Delta ring.
and attache a Noveske-10" with 10.5" barrel. going from Stock longer barrel to shorter...
will I lose much power/Fps. reguarding the cylinder being non-ported) ?

IF indeed its ported...Than I presume no big deal.. and going shorter
doesnt matter.
But this rifle is being used for woodland, I want to gain range if anything
not lose it. but Im willing to sacrifice a tad. for the sake of applying
a better looking Rail system.. be Noveske 10" or DD-12".
Also anyone know if a DD.12"
Can go on this model and attache to the delta ring? with less hastle. ?
Than say the Noveske 10. that comes with gasBlock.
Just figuring out my options.

[Snakebite1967]

i tried a VFC Sr16 10.5 front end on my Sopmod fps dropped about 28 fps which is exactly the diference between my buds VFC Sr and my Sopmod

[Kos-Mos]

I fixed an M4 that had (amongst other problems) a full cylinder with a 11.5" barrel...

Increased FPS by 75 with the correct porting.

The better your compression with the piston head/cylinder/nozzle, the larger a difference it will make in FPS.

[CGX]

Ok Thanks for the info/advice guys..