Missing and defective parts - Ghost Firearms Upper Receiver, Pistol Lower Parts Kit, 5.56mm/.223, 10.5in, Carbine , Moly Barrel, 1-7 Twist, 9in M-LOK Free Float Hand Guard, A2 Flash Hider

I had a client wanting a inexpensive AR pistol. So I bought this kit to mate to his receiver. The upper looks to be of decent quality, 3 weeks and still can’t fire it. The hammer was defective out the gate due to the internal spring that holds the hammer pin in was bent wrong. The pin cannot be installed either in the receiver or in a trigger jig. It was also missing the bolt hold open pin. I’ve made no lie, thousands of these rifles and this is the only one with a hammer issue. Very Very frustrating getting help in replacing. Bought kit from PSA and took loss with my client.