that is a Crosman 2300 Custom with a 14" barrel, a 2260 trigger group, a cut down/reshaped/resculpted 2260 stock, Crooked Barn Ultimate Breach, Arts Shack steel bolt and handle. It is as loud as a stock 2300/2240 with a 14" barrel, the shroud on the barrel is just for looks, it's an empty tube, no baffles. I have never chronied it since it is a backyard paper puncher I built for my wife for Christmas, but I would guess maybe mid 500 fps range?
I have plans to do a QB78 here in the near future. I have the QB78 which has been mechanically modded, I just can't stand the stock. I have another stock for my pistol gripped 2260 to finish before I can even think about tearing into another one....I must have 3 apart on my bench right now, that would be a good picture...hehe.
Dan