JCrider

I purchased one last month and I think I will keep it... absolutlely no blow back - no black on the scope... and it is easier to use and extract the spent shell.

Accuracy? - It is still as accurate as it was...

The only thing I am not sure of yet is ignition of t7-2f in really cold temperatures. I takes a lot of heat to ignite the t7 in really cold weather.

It is expensive by my standards, but then again what isn't.