Don't know the history of this rifle.
Shot it for the first time 08-24.
Used the .22 14 grain Crosman Premier Hollow Points while testing grips, thumb rests and finger spacers
When I put together the correct setup this rifle shot like nothing else I own. The trigger is absolutely fantastic.
It is tuned for 22 grain pellets so the 14's are being spanked a bit hard and thus have a very, very, fast loud bark in protest, but I still was able to put together ragged one hole 5 shot groups at 20 yards.
I have an ARCA to PICATINNY coming which should allow me to better balance the rifle on the bipod for my style of shooting.
The HM1000X is a fantastic build and the MPA Chassis is an absolutely stunning piece of very functional metalwork.