alloutdoor.com
A compact survival rifle.Kel-tec RDB-S is not out yet, but it’s become slightly infamous thanks to a creative ad agency. Expected in retail stores by Spring 2018, it’s a lightweight variant of the RDB-C rifle. Unusually for a bullpup, it has a variable length stock. Extended, it brings the overall length past the legally mandated 26 inches.
Pulling on the stock clicks it open, pressing a latch on the underside of the buttpad releases it. Length of pull difference is about 2.5 inches, making for comfortable bladed position in open state and equally comfortable isosceles in closed.
Originally developed as a survival rifle, RDB comes with an excellent set of folding iron sights. Folded, they stay out of the way, raised provide a backup to optics.
More:
http://www.alloutdoor.com/2018/01/04/keltecs-rdb-s-actually/