Browning machine gun caliber .30, HB, M1919A4 (mounted in combat vehicles).

Bibliographic Details
Corporate Author:	United States. War Department
Format:	Book
Language:	English
Published:	Washington : U.S. Govt. Printing Office, 1942.
Series:	Field manual ; FM23-50
Subjects:	United States. > Army > Handbooks, manuals, etc.

Cushing: Ragan Military (Does not check out)