The 4570 Springfield Author:Joe Poyer, Craig Riesch Since the last edition, the authors have continued to gather new information relating to the "trap door" rifles and carbines. The result is this new 274 page, 4th edition (more than twice the size of the previous edition) which provides a definitive examination of the .45-70 Springfield. Using the "part-by-part" analysis of the rifles and carbin... more »es originated by North Cape Publications, Inc. Every part and every change to that part made by the Ordnance Department is described in photos and drawings. Dimensions and finishes are listed for each part in both the text and tables. For instance, seventeen different rear sights were used on the .45-70 Springfield trapdoor rifle and carbine. Each sight is carefully photographed and the differences noted. Then each rear sight is matched to the specific serial number range in which it was used. The same technique was used on lock plates, barrel bands, trigger assemblies, stocks, ramrods, etc. All markings and inspection markings are explained and illustrated with photos. A new serial number listing has been developed which takes into account the 22,500 "starred" carbines and integrates them into overall production so that serial numbers and cartouche dates can at long last be matched correctly. Separate appendixes provide production totals, an exploded view, disassembly and cleaning, how to determine if a .45-70 has been refinished or a carbine made from a rifle, a chart of finishes by part, and special sections on the Cadet rifles, starred receivers (where they came from and why), the rod bayonet rifle, and the commercial trapdoors.« less