See NavWeaps. According to online sources, the new gun was only proposed in July 1927 six months after the date given by Budzbona and Radziemski, p. 86 for the initial two-gun design.
navweaps.com
See NavWeaps. According to online sources, the new gun was only proposed in July 1927 six months after the date given by Budzbona and Radziemski, p. 86 for the initial two-gun design.