I second the "Not as easy as it looks" school of thought - and I worked in a gunsmithy with four skilled gunsmiths for several years. With $60-80 recievers available (a tank of gas, nowadays, folks) I don't see the benefit. Unless you are a prohibited person - and that would be courting real hard time - and few of those geniuses are machinists. I understand 80% as an item for display only or semi-auto conversions of FA firearms, and that makes sense - they cost too much if you pay someone to finish it. Paying for the anodizing/hardcoating alone brings the price even with the real thing. My time is worth more than that...... CC