With all due respect Andy, you're not quite right. Ruger did discontinue the 10/22M but it is a fine rifle and commands a great premium over what it originally cost. I could go into great detail over what problems existed but they could mostly be summed up with the fact that owners treated the guns like 22LR guns and never cleaned them. Regular cleaning clears up almost any problem with the rifles.
The Remington as of this moment is still in current production according to their website. I believe you are mistaking this with their discontinuation of the 17hmr variation.
The Grendel company did go out of business. The Grendel like the KelTec had a magazine containing 30 rnds. Conincidentally the President of Grendel is now a VP at KelTec. Cnincidence? I think not.
You forgot to mention the BRNO 611 ZKM, a magnificent rifle which is no longer available. It is only not available because BRNO was absorbed by CZ who as of yet has not chosen to remake the 611. If it was unreliable I doubt Tom Knapp, the exhibition shooter, would still use one in his shows to shoot airborne aspirin.
I own both a BRNO and the 10/22M. Although they would sell quickly for a bunch of S&W buying money I have no plans to let either go. They both are accurate (the BRNO amazingly accurate for an autoloader) and both have cycled Dynapoint, Fiocchi, Hornady, and other ammo with no problems whatsoever. In fact two weeks ago in subreezing weather I rand some Fiocchi (notoriously underpowered) through the Brno without so much as a hesitation.
