I bought a SpectreII in mid October and Tirant 9 about a week later.I got the call today that both stamps were here. Will pick them up on Friday and go break them in!
Take the flash hider from your rifle and carefully see if it will thread on the Storm lake barrel or if you have a thread protector on the Storm lake barrel try it on the Lar 9 barrel. IF neither fit then one is different.
I have a Spectre II in jail as well and have shot the Sparrow that my friends have. I love the Sparrow but went with the Spectre II hoping to have less FRP.