I have two older 3 position colapsable stocks. One is relatively heavy and coated with a rubberized type of paint. I believe it is a Colt but there are no markings on it.
The other is much lighter and appears to be some type of cast alloy. The surface is rather rough and has been painted black.
Both have tubes, springs & nuts. Is there any way to determine who manufactured them and what they may be worth?