These are extremely high quality magazines, made exactly like original Underwood 30 round magazines. They are marked with a "UU" on the back side, just like the originals.
These are the nicest, most accurate reproduction mags we have ever seen. Workmanship is superb, with a no tilt follower. Made in Korea.
This magazine, as well as original G.I. magazines, may not function in Universal carbines, due to differences in the magazine catches and dimensional differences.