Need help on deciding on what ar pistol upper to get

[NW-GSP]

I am thinking about buying this one https://www.veriforcetactical.com/product/ar-15-pistol-upper-carbine-quad-rail/

I am wanting this as a truck gun and just for fun.
I am open to buying the parts and doing it myself also. Any input is welcome.
I already have a 6.8 spc ar for longer range stuff so I'm well aware that the pistol will not be something for longer range shots.

[NW-GSP]

Someone here has to have some experience with this

[jeffro]

I have an Adams 10" piston and an Aero 7.5" gas
Both 5.56 and both work flawless
Paid less than your deal for the Aero with BCG and slightly more for the Adams piston W/O
You may have to experiment with recoil springs to get proper function
And or a adjustable gas system helps