I doubt they or any part of them was made in Spain.
I am sure the barrel was made in the USA by Numrich and I suspect all of the other parts were made in the US as well.
Here is a partial copy of a post made by a guy who calls himself John Stimson. It was made on another web site.
"The Numrich Gun Parts Corp black powder rifles are pedestrian guns made after the fashion of some guns from 125 years or more earlier and are not replicas of any specific makes or models.
The earliest magazine advertising was in July 1961 and included only a single round barrel model, a .45 caliber under hammer rifle with no fore stock but with ramrod and ferrules for $44.50 and was not a named model as were later Numrich guns. The buyer also received in the kit a .45 cal bullet mold, a quarter pound of black powder in a flask , a powder measure, a ramrod and instructions.
By December 1961 they were advertising a "New" Off-Hand Model in .45 caliber with an octagonal barrel. That rifle and kit listed at 53.50. In June 1962 they added .36 caliber as an option for the Off-Hand and introduced a .36 or .45 caliber Boot Pistol which was also an under hammer design.
.....
A December 1966 ad shows the first side lock model the Minuteman in .36 or .45 caliber with Gain or Uniform twist rifling, and in flintlock or percussion. $149.50.
The Deer Stalker model appeared in an August 1968 advertisement as a .58 caliber under hammer model with wooden fore hand. However in a press release in Shooting Times Magazine dated March 1969 it was announces that the Deer Stalker would be available for early Fall delivery.
A May 1969 ad shows the .45 caliber percussion side lock turn barrel rifle $139.95
A July 1970 advertisement shows a Minute Man Rifle kit $99.50. Other kits follow.
An August 1971 advertisement shows a Pennsylvania half Stock rifle Kit in .45 caliber flint or percussion.
....."
Apparently, some parts are still available from Numrich.
https://www.gunpartscorp.com/gun-m...llen/muzzleloading-rifles/minuteman-2[/quote]
Thanks Zonie, That is some fascinating information. I like the fact they were made in USA. Which is a rare thing. The one I am entertaining also has what looks like brass inlays up the side of the stock? I forgot to look and see if these brass inlays are infact barrel wedges? I may call the guy and ask him? After all of your and others information I am now intrigued.