I got two High Standard lowers from Lone Star Wholesale last week for $95.00 each before the price increase. I had two uppers ready to go when they came in and everything went together perfectly.
They both functioned great when I shot them.
They are absolutley great. No problems fitting them to the uppers. One of them was a complete USGI surplus Colt A1 upper that fits great, so they are close if not exactly mil-spec. And the other upper was a Colt A2 HBAR large front hole complete upper, that required a spacer or adapter. But that to worked out well.
The finish is great and is a close enough match for both uppers. They appear to be a high quality product.
Robbie from Lone Star Wholesale told me they are made by CMT. He has a sale add in EE that has some pictures posted by another arfcom member.
The serial numbers do not start with a "CM".
For the price last week of $95.00 they were well worth it.