looking for an m1

i have an important information about the speceific gun which i liked the mist and that is 90mm M1 for which you are also looking for , i am looking for this gun also with specialized feature i am using a dsl connection. the information; During the 1944-1945 German bombing campaign against the Allies in the Belgian port of Antwerp, 90mm AAA operated 22 hours a day with two hours a day for maintenance. The life expectancy of the gun tube was 1,500 to 2,000 rounds and many batteries wore out three or four sets of tubes over the course of the campaign. After the third wore out, the gun slide had to be replaced as well. Due to shortages of replacements some barrels were retained until they fired as many as 2,500 rounds but this was a dangerous practice. When the tube became that worn, muzzle velocity grew erratic and, in some cases, the lands in the tube began to peel. For much of the four months of December 1944 to March 1945, nearly every 90mm anti-aircraft gun barrel produced was sent to Antwerp, while units in the Pacific and Mediterranean had to wait. In February ammunition ran low despite emergency deliveries by air. The M-13 fuze-setter and the hydraulic rammer were considered problems. In the case of the latter many gun crews resorted to ramming by hand, a practice many a section chief maintained was better than hydraulic ramming anyway.

thank

adams