The Brazilian M954 Mauser, also known as the M1908 rifle, typically uses the M1908 bayonet. This bayonet features a blade length of approximately 12 inches and is designed to fit the rifle's muzzle and barrel. Additionally, earlier models like the M1904 bayonet may also be compatible, but the M1908 is the most commonly associated bayonet for the M954 Mauser.