Answer: oldwest

AnswerCrossword Clue
OLDWESTShoot-em-up setting
OLDWESTOater setting
OLDWESTThe Dalton Gang's milieu
OLDWESTGrey area?
OLDWEST"Gunsmoke" setting
OLDWESTCowboy movie setting
OLDWESTMilieu of the cowboy.
OLDWESTBoot Hill setting
OLDWESTCowboy's frontier land