Yes, I did and I actually built 2.

One is a competition PCC with Davinci upper and lower.

• Left Side Charging Handle

• Davinci BCG

• Davinci Titanium Muzzle Brake

• BSF Barrel

• PDI Hiperfire Trigger

• Armaspec Stealth Recoil Buffer

• Magpul MOE-K2+ Grip

The other is a Foxtrot Mike lower with BHO and Foxtrot Mike upper.

• Radian Raptor SD Charging Handle

• Foxtrot Mike PCC BCG

• Angstadt Arms Tri-Lug Muzzle Brake

• BSF Barrel

• PDI Hiperfire Trigger

• Armaspec Stealth Recoil Buffer

• Magpul MOE-K2+ Grip

Both of then run Glock big stick mags and Magpul 9mm PCC drums.

The PDI triggers are also pretty damn good and the BSF barrels are incredible.

Another awesome and affordable PCC is the Ruger PC Carbine. Slap a drum mag on that and it has PPSh-41 vibes.