Below is a list of serial numbers for Trapdoor Rifles noting the year and sometimes month(s) it was produced. Serial numbers begin with the 1873 Trapdoor Rifle. All given serial numbers are approximate. These serial numbers are credited to Albert Frasca, PH.D. and Robert Hill in their book The .45-70 Springfield.
- Model 1865 Trapdoor Rifle
- 1866: 5,005 Converted Muskets
- Model 1866 Trapdoor Rifle (None were given serial numbers)
- 1867: 49,257 Rifles and 320 Cadet Rifles
- 1868: 1,796 Rifles and 104 Cadet Rifles
- 1869: 1,296 Rifles
- 1871: 1 Rifle
- Model 1868 Trapdoor Rifle
- 1869: 15,482 Rifles and 3 carbines
- 1870: 34,651 Rifles and 1 Carbine
- 1871: 2,016 Rifles, four of which were sporting rifles
- Model 1869 Trapdoor Rifle
- 1869: 2 Cadet Rifles
- 1870: 310 Cadet Rifles
- 1871: 3,090 Cadet Rifles and 1 Sporting Rifle
- 1872: 3 Sporting Rifles
- 1873: 2 Sporting Rifles
- 1876: 20 Cadet Rifles
- Model 1870 Trapdoors
- 1870: 550 Rifles
- 1871: 2,372 Rifles, 341 Carbines, and 20 Undetermined
- 1872: 8,110 Rifles and 1 Sporting Rifle
- 1873: 501 Rifles (Including 100 Metcalfe Alterations), 1 Sporting Rifle and 1 Carbine
- Model 1873 Trapdoors
- The serial number listed is the last one made in the given month(s).
- 1873
- July-September: 4
- October-December: 1,946
- 1874
- January-March: 10,592
- April-June: 28,032
- July-September: 29,718
- October-December: 35,218
- 1875
- January-March: 45,039
- April-June: 54,779
- July-September: 57,407
- October-December: 60,325
- 1876
- January-March: 64,164
- April-June: 69,815
- July-September: 71,673
- October-December: 74,213
- 1877
- January-March:74,231
- April-June: 76,725
- 1878
- January-March: 81,226
- April-June: 89,729
- July-September: 94,467
- October-December: 100,395
- 1879
- January-March: 104,919
- April-June: 109,753
- July-September: 113,920
- October-December: 119,273
- 1880
- January-March: 125,953
- April-June: 130,140
- July-September: 136,545
- October-December: 144,519
- 1881
- January-March: 151,222
- April-June: 156,700
- July-September: 160,722
- October-December: 164,896
- 1882
- January-March: 170,487
- April-June: 179,736
- July-September: 185,569
- October-December: 193,815
- 1883
- January-March: 203,087
- April-June: 212,809
- July-September: 219,411
- October-December: 228,571
- 1884
- January-March: 228,571
- April-June: 237,708
- July-September: 247,189
- October-December: 263,876
- 1885
- January-March: 275,266
- April-June: 287,246
- July-September: 296,367
- October-December: 306054
- 1886
- January-March: 315,857
- April-June: 326,773
- July-September: 335,915
- October-December: 346,775
- 1887
- January-March: 356,677
- April-June: 367,879
- July-September: 376,839
- October-December: 387,645
- 1888
- January-March: 398,207
- April-June: 408,909
- July-September: 417,929
- October-December: 428,769
- 1889
- January-March: 439,436
- April-June: 450,281
- July-September: 459,533
- October-December: 470,294
- 1890
- January-March: 480,259
- April-June:490,019
- July-September:495,420
- October-December: 502,540
- 1891
- January-March: 510,181
- April-June: 519,421
- July-September: 525,941
- October-December: 533,681
- 1892
- January-March: 541,221
- April-June: 547,121
- July-September: 552,042
- October-December: 558,122
- 1893
- January-March: 563,562
- April-June: 567,882
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