pstidan

If you are a Texas resident and the business you bought it from is also in Texas, you paid Texas sales tax. At 8.25%, your $8000 purchase cost you an extra $660.

I have seen 639s with two types of markings. The first type has no markings other than a s/n with the format of SU4790XXX as is shown in the post above: I have also seen them with the Colt's name and address added: The must have registered and engraved at different times.

I do not know why only 'some were transferrable'. Maybe it was one of Colt's stipulations to their distributors. Back in '75 a friend tried to purchase an M16A1 from Colt. He was an FFL and also sold machineguns. Colt would not sell him one unless he send them a copy of a purchase order from a law enforcement agency. There is a picture of 639 s/n 4790002 on gunboards dot com. Look here https://forums.gunboards.com/showthread.php?1100039-I-Think-I-Have-a-Colt-Addiction Go down to post #54 to view it.

Does anybody know where I can find one?

From experience, always include a copy of the Form 3/4 because BATFE may not have the correct information on file. This is especially true for anything registered 20+ years ago. Their record keeping is not the best.

And, what is your target price?

Also, include a copy of your Form 3/4.

Please post pictures.

Only if it is yours already and have the BATF paperwork to prove it.

MGM guns have property engravings. Dolf sold his to a friend of his a couple years ago. I believe it is in New Mexico.

Please post a picture or two.

All full auto or are there any semi autos?

I just learned that Estes Adams has passed away at the age of 68 on June 20th. He will be sorely missed, especially by the knowledgeable SIG rifle community.

The moral of the story is to always ship via USPS. If they don't like the packing, they won't ship it.

I don't remember having any knobs, just the scope tubes. It will take me some time to find them. When/If I find them, I'll post some pics and you tell me what their value is.