run dont walk away from these
its not a kedr or 90 percent of the parts of a kedr, its loosely based on a kedr receiver stamping and manufactured by same firm that made those - Kedr sights, pistol grip, folding stock have all been dumped and the top cover is pressed to similar shape, while the fire select has ended up on the wrong side.
If that was all that as wrong with it it'd still be an interesting gun in and of itself (in some ways it still is)
However the reliability and performance has been slated as appalling - the russian forums were hopping with folks less than happy with it
at one stage they even had the original designer of it complaining that the plant had completely ignored his concerns about changes they'd made to make it easier for them to manufacture, about how the changes (and the plant) werent up to the job, how they'd ignored his solutions to the problems their changes had been causing and finally how they hadnt even bothered their backsides paying him the royalties owed, so he was ########* if he was going to make any more suggestions. All turned into a bit of a trainwreck.
Take down when it breaks is reportedly a bitch (with some areas supposedly requiring a return to factory) and parts are like rocking horse poo even in Russia
there was some debate as to wether the export version (twice the local price) was any better or just the same gun in semi auto only format. Most folks seemed unsure if it was even going to be sold in russia for much longer as it had disappeared off most of the usual dealers shelves.
Id suspect the semi auto nature of the German and UK ones might make them a little less problematic but for the price Id expect more than a maybe
guy that designed it has done some truly bizarre other stuff, if you want really tempted Russain 'MMG'-spec MP38s, MP40s and MG 34s (read captured and mothballed real ones that were deactivated) with similar systems shoehorned inside
http://www.sagittarius-tir.ru/?id=prod&sid=mmg
Ive added the MG34 video and a couple of others to same youtube account as the tirex one, should be live now
http://www.youtube.com/user/snorkelman101