The B&T SPR 300 is a precision rifle system by Brügger & Thomet of Switzerland. It’s chambered for the .300 Whisper cartridge which in many ways is almost identical to the more contemporary .300 blackout
The whole rifle system is integrally suppressed and disassembles to fit into a convenient carry case. Despite being fully bedded into a milled aluminum chassis the rifle weighs just under 8 pounds loaded.
(Bottom photo by http://bigdomphoto.blogspot.com/)