The only Umarex pellet blowback pistols I can think of are:

1. The Desert Eagle. Huge, bit stupid (like the real thing), very plastic, very very noisy, does not handle well, recently discontinued, gas hog (25 shots per 12g), quite accurate.

2. PX4 Beretta lookalike. Never used one, but a sensible sized pistol. Unfortunately does not have a great reputation, including for accuracy.

The Gamo PT85 may be worth a look, though never used one myself. I have used the PT80 and it’s OK, and cheap.