I bought an MMC upper to put on my home built Surplus Ammo and Arms lower, it's got green Magpul furniture and sights. I've heard a lot of negative reviews about MMC after I bought it. Still haven't shot the thing, still brand new, wondering if I should just sell it for a profit in the panic buy and be done with it? Anyone had any personal experience with this company? Wanna kill these ads? We can help!