I built this AR like 3 years ago and have barely shot it. Shoots great. Shoots OEM glock mags the best. I had to test a few Korean mags to find one the worked well so I am selling the AR with that mag. It is a Quarter Circle 10 .45 ACP lower with the KAK stabilizing brace. I can't remember which upper reciever and hanguard I used. I know the barrel is a Kaw Valley 8.5" barrel and the BCG is New Frontier. Awesome gun for use with a suppressor. Just the Lower was over $500 and the upper Im sure was in the same ball park. My loss your gain! Must have a current Texas ID and be a law abiding Texas citizen! Call or text at 512-304-8116.