Gregory Kent McMaster, Tulsa, Oklahoma, formerly of Tarkio, Missouri, passed away Friday, September 1, 2023, at his home in Tulsa at the age of 76. Graveside funeral service and interment will be held at 1:30 p.m. Sunday, September 10, 2023, at Home Cemetery, Tarkio. The family will receive friends on Sunday, prior to the graveside service, from 12:00 p.m. to 1:00 p.m. at Davis Funeral Home, Tarkio. Full military honors are under the direction of Allen-Schiffern American Legion Post #199, Tarkio. Memorials may be directed to Home Cemetery, Tarkio. Arrangements are under the direction of Davis Funeral Home, Tarkio. Online condolences may be made at www.minterfuneralchapels.com.