Thank you for the resonses. Please let me know if the lower black or gray, small or large fire control, small or large front pin, drilled for a push pin, with or without a sear block or was the sear area never milled out, stripped or with internals, with or without a stock? If you could, please send me a close up of the markings on the lower, specifically the model designation. Is the lower marked Colt Defense or Colt Manufacturing Colt Industries, etc? Please let me know.