Ritter & Stark is a newly formed firearms manufacturing company in southern Austria. At the recent AUSA 2016, the company unveiled their flagship product, the SX-1 Modular Tactical Rifle (MTR). The rifle is an Austrian take on the PSR style rifles that are currently sweeping the tactical precision long gun world. By that I mean a convertible barrel system from .308 Win, .300 Win Mag, and .338 Lapua, in addition to having a folding buttstock and modular components.
However what this rifle has that others in the category don’t are a number of innovating features. The buttstock appears to have an AR buffer tube and AR pistol grip, so end users can accessorize their rifles with AR products when it comes to these components. The trigger can be replaced with any Remington 700 trigger, in addition to the bolt itself having some neat options more akin to a 19th Century Mauser rifle than a modern tactical one. It has a Fire position, a Safety position, and a Lock position, all from a lever at the rear of the bolt. The magazine well can be changed out to accommodate various other magazines and can even be custom ordered (I assume it is injection molded polymer, or 3D Printed somehow, to make it customizable). But most innovative in my opinion is the picatinny rail section that is bolted to the barrel. This section stays with the barrel between conversions or disassembly, in addition to any scope that is on it as well. The action, stock, and handguards are simple to disassemble.
The companies promotional video is very well put together and quite informative about the design. It looks like they went for maximum effect when it came to showcasing the rifle on their website and in this video.