I cannot find any information about a product or item called "Cold Air 15" with an associated buttstock. It's possible this is a niche product, a misspelling, or a reference I'm unfamiliar with. To help me answer your question, please provide more context:
- Brand Name: Is "Cold Air 15" part of a larger brand name? Knowing the manufacturer or seller would be helpful.
- Product Type: What kind of product is it? Is it a firearm, a piece of sporting equipment, a piece of furniture, or something else entirely?
- Image or Link: If you have an image or a link to a website selling or describing this product, that would be incredibly useful.
With more information, I can research and provide a detailed answer about the original buttstock for the "Cold Air 15," including its materials, design, and any historical significance.