Light use range toy - American Tactical Imports AR-15 Stripped Poly Hybrid Upper Receiver

I waited to review this as I enjoy first hand experience but unfortunately few years and only few hundred rounds My wife like it her toy but we couldn’t get it to zero after few different sets of sights then a red dot it would zero 3-5 rounds later be off further and further with use eventually we set it left it and cooled down and was on for a few shots
After on and off tinkering over and over again we figured out build up material where barrel seats was flexing and would allow barrel to sag and pivot after smoothing and heavy grease reassembly 3 times about 5 MOA first few shots then opens up making it just that a range toy

Never failed to shoot or flex and caused failure but will never be zeroed