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OK, the wraps are off. Nov 1 is here and I can reveal the photos I took of Beretta's new A400 Xplor Unico at the press preview event back on 8 October.
Here, in the words of Beretta product manager Paolo Buffoli, is a description of the operating system:
Beretta has developed for the A400 Xplor Unico a new functioning system made up of: a new rotation bolt system, improved feeding system, and a new Beretta gas valve. That’s B-Link! UNICO, thanks to the new Beretta functioning system, is the fastest shotgun of the world.
Specially designed for A400 Xplor, the new gas piston has an elastic scraper band that, as well as cleaning the internal part of the cylinder, is a washer to prevent the gas from leaking out of the valve (as happen in the car engines). When the gas come into the valve the pressure increases immediately, because of the washer, and consequently the piston starts its movement.
To obtain the best performance and the highest speed, racing car engines must be top efficient, without any waste of power…and Beretta has followed the same philosophy.
Is certified that A400 Xplor is, at least, 36% faster than any other functioning system in the world.
While making its washer function, the new piston elastic band cleans the internal part of the cylinder and prevents the gas exiting from the valve. As a result the gas mechanism cleaning is maintained; cleaning that of course is stricltly related with the quantity of the gas present. Thanks to this new seal system the quantity of the gas spilled from the barrel is exactly what we need for the functioning; this means that we have half of the gas inside in comparioson with the old models. B-Link, the new A400 Xplor engine, is the best on the market in terms of efficiency and cleaning.
And finally, here's Beretta's leaflet explaining the key features of the new gun: