3704 M1931 B-4 Howitzer

Steps 1, 2a, 2, 3, 4a, 4
0:45 hours spent 

Steps 13a, 13, 14a, 14, 15, 17, 18
1:00 hours spent 

Steps 19a, 19 (not full), 20a, 20b, 20
0:20 hours spent 

Steps 16a, 16, 19 (completed), 21a, 21
0:45 hours spent 

Steps 22, 23a, 23, 24a, 24, 25a, 25, 26a, 26
1:30 hours spent 

Steps 27a, 27b, 27c, 27d, 27, 28a, 28b, 28, 29(not full), 32a, 32b, 32(not full)
1:15 hours spent