Vintage 1980s action-adventure Killsquad series by Frank Garrett. This was originally a 10-book series, but only 8 books are included in this listing. Book 2 was missing, and Book 8 was in such bad shape I had to throw it away. From my research, this series seems to be pretty rare now.
Books do show their age with some yellowing and surface wear. Some small text is stamped on the bottom edge of the books. Please see all photos.