FN PS90 & The CMMG 10.4" Barrel!

I submitted my Form 1 to the ATF and in 3 weeks, they sent me my tax stamp allowing me to install the short barrel. I use Silencer Shop (as I explained in the video) to submit my form electronically since they have everything on file. Once I had the ATF approval, I purchased the barrel and the front threaded adapter which allows the use of a muzzle device or suppressor. Now it's only 19" overall length and the way it was designed to be. There's only about 50-100 fps lost from the 16" barrel and it's still coming out at over 2,100fps. Here's' the 2 suppressors I showed in the video:
1) Silencer Co. Sparrow
2) Sig Sauer SRD22X
Both are rated for the 5.7 round. Thanks for watching!