For the first time in recorded literature an extensive technical description of the gun is given with a highlights on the sights used with the gun, as most of the constructional changes of the gun are directly related to the sights. Also the service history of the Flakvierling is described with organisational schemes and historical photos showing the gun from 1940 to the War's end, together with a comprehensive review and example of the models available at this time:
2 cm Flakvierling 38 Nuts & Bolts Vol.27: 2 cm Flakvierling 38
160 pages A4, glue-bound, approx. 336 photos, of these 169 historical shots from manuals and during mission in b/w, a number of them previously unpublished; 149 colour photos of the surviving guns in public and private collections, 18 colour photos of the model from Tony Greenland, English / German captions, 33 pages English / German text, 20 pages of scale drawings of all versions in 1:35 scale from John Rue, 12 camouflage schemes from Carlos de Diego Vaquerizo, and tables of organization of units having the Flakvierling (Kriegstärke-Nachweisungen KStN) in their inventory.