Deleted this by mistake, please excuse.

Detonics Combat Master 45acp. Only marking on slide is "Detonics 45" measures 6 ¾" long by 4 5/8" inches deep, 3.25" barrel and four 6 shot magazine. 1970's production in Bellevue, Washington has fixed sights, hard chrome finish, videcki trigger($35) have orginal trigger as well. Swenson Amby Safety($89). Ejection port has been lowered, see pic below. The parts were fitted smoothed and tuned (blueprinted is popular description now) by Bill Thompson, email me for his link, gun serial number, or more pics. Over $200 parts and smithing work. Price $775