First Choice - Armed And Extremely Dangerous (1973)
Single on Philly Groove label by Philly soul
trio formed in Philadelphia in 1971.
Writers Felder and Harris were
regular collaborators in the Philadelphia Soul scene of the 1970s.
Further reading: 1. Allan Felder and First Choice at All Music Guide. 2. Philadelphia (Philly) Soul entry at Wikipedia.
Thanks to Mike Robbins for clarification.