Air Rifle Question, what is the......

[Tincup]

Not being sure what the nature of the mysterious requirements might be I would be inclined to buy a normal 12 pound rifle and shave the wood down to the point that I was afraid it would shatter on the spring impulse, and replace the wood butt stock with a wire skeleton. Then cut the barrel down to shorty length and use a section of aluminum pipe slipped over it to cock it.

The addition of a lightweight scope or reflex sight would allow dismissal of the bulky and heavy sight systems used on these rifles.

Bet you could get it down to 4-5 pounds and 2 feet long.