Here are more than a few you probably missed. I'm just killing time waiting to take the puppy on a walk. I know a few have a magazine you don't want, but with a 5 round mag they shouldn't hang too low. I didn't know your budget as well, so you got a bit of a mix. I like the Ruger Hawkeye Compact I posted if there is enough meat to thread 1/2-28. However, the M7 I posted is the easy button to what you want if it didn't have the DBM.
SAC Zermatt Origin build 18"