I am not sure where to start, since I said that Its all positive> Lest start at the beginning. Buds gun shop is and have for many years that I have ordered fire arms off of this company no complaints, being buying pistols and rifles (a lot since 2013). Very good costumer service if you have questions! Now. The company CMMG I've been looking at there fire arms for years (Dang it is a big price tag, I will just wait, Until Virginia Gov. had signed a Bill, that changed my mind). Since that is said, I really did not know what I was missing on the difference from other manufactures. I look ed that the 300. Black Out for long time, while I already built one took time in tuning it with a suppressor with a 8.5 barrel; however, I got this CMMG Banshee MK4 8" Barrel 5.7x28 I put a Omega 36M on it (you can use a .22 Suppressor that's rated). The operation of the action was so smooth from, charging, cycling, and handling of the fire arm. With that suppressor it sounded like a .22 short ammo in the distance and I was using standard .40 grain FMJ. I hope this helps!