I own the Firestorm .22LR and it's enormously dependable and very straight shooting... and not excessive in price, I got it for under $300 here in Texas, and that was after the inauguration, if ya know what I mean...
very very good .22LR, and one of the expert reviewers (Jeff Q at Gunblast? Not sure off the top of my head) reports that it can hit almost 1300 fps at ten feet off muzzle with good fast ammo, Stingers I think he said.. something about the design, the blowback is delayed by pressure so that it is 'fixed breech' during detonation and thus gives a bit of a boost to the velocity .. I don't recall the link or writer but I know I read that and was impressed, because the FS is not a long barreled gun... and not many short barreled .22LR pistols get that much above supersonic..
I've been shooting this little gun all year and would recommend it to anyone.. the only FTF was when I got crazy and tried Vipers to see if they'd load... they do not.

But that's because the bullets are like semi wad cutters, not rounded at all.. I sort of knew they wouldn't work but had to try anyway.. every other .22LR I can find has loaded and ejected from this gun trouble-free, literally NO problems over thousands of rounds.. very easy to break down and clean..
side benefit-- it is plenty small in form factor and can drop into a pocket no problem.. and with good muzzle velocity, it wouldn't be the worst b/u or carry you could find.. my wife likes it very much... no recoil, just straight shooting without drama..
btw it is all steel, comforting, not too heavy, and that really helps with the recoil..