Hello Trajanus,
A return of the arms carried in the AoP in March 1864 is provided here:
link
Unfortunately, the section of the list for the cavalry is far from complete, but a similar listing for 30 June 1864 (drawn from the same sources) can be found on pages 46-47 of John McAulay, Carbines of the U. S. Cavalry, 1861-1905, (1996). Note that all weapons are carbines unless otherwise stated.
1st Division – BG Alfred Torbert
1st Brigade – BG George Custer
1st Mich – 40 Sharps, 264 Spencer
5th Mich – 13 Sharps, 102 Spencer, 37 Spencer rifles
6th Mich – 244 Spencer, 1 Spencer rifle, 1 Burnside
7th Mich – 19 Spencer, 66 Spencer rifles, 7 Burnside
2nd Brigade – Col Thomas Devin
4th NY- 182 Sharps
6th NY – 238 Sharps
9th NY – 46 Sharps, 184 Sharps & Hankins
17th Pa – 235 Sharps, 2 Burnside, 4 Smith
Reserve Brigade – BG Wesley Merritt
19th NY – 220 Spencer, 22 Joslyn, 2 rifle-muskets
6th Pa – 195 Sharps
1st US – 129 Sharps
2nd US – 204 Sharps
5th US – 89 Sharps
2nd Division – BG David Gregg
1st Brigade – BG Henry Davies
1st Ma – 353 Sharps, 47 Burnside, 4 Spencer
1st NJ – 288 Burnside
10th NY – 118 Sharps, 21 Burnside, 104 Smith
6th Oh – 108 Sharps, 100 Burnside, 3 Smith
1st Pa – 217 Sharps, 13 Burnside
2nd Brigade – Col Irvin Gregg
1st Me – 172 Sharps, 186 Burnside
2nd Pa – 392 Sharps
4th Pa – 203 Sharps
8th Pa – 129 Sharps, 62 Burnside
13th Pa – 178 Sharps, 142 Burnside, 25 Gallager, 10 Spencer
16th Pa – 380 Sharps, 12 Burnside
3rd Division – BG James Wilson
1st Brigade – Col John McIntosh
1st Conn – 25 Sharps, 56 Burnside, 64 Smith, 14 Spencer, 4 Spencer rifles
3rd NJ – 172 Sharps, 2 Starr
2nd NY – 137 Sharps, 191 Burnside, 1 Starr, 42 Spencer rifles
5th NY – 7 Sharps, 152 Spencer, 22 Spencer rifles
2nd Oh – 39 Sharps, 343 Burnside, 9 Starr, 1 Spencer, 3 Spencer rifles
18th Pa – 226 Burnside
2nd Brigade – Col George Chapman
3rd Ind – 133 Sharps, 243 Burnside, 78 Smith
8th NY – 140 Sharps, 4 Smith
1st Vt – 165 Sharps, 2 Burnside, 15 Spencer
Escort
6th US – 317 Sharps
8th Ill – 98 Sharps, 1 Starr