Part Number: 115788P10 (No description) Part Number: 115788P15 (Guide) Part Number: 115788P3 (Guide) Part Number: 115788P5 (Guide) Part Number: 115789 (Flexible seal) Part Number: 11578901 (Front head) Part Number: 11578902 (155 mm m199 head) Part Number: 11578904 (Shaft welment) Part Number: 115789-1 (Westinghouse) Part Number: 11578911 (Pin) Part Number: 11578912 (Pin, stright, headed) Part Number: 11578913 (Spring) Part Number: 11578914 (Spring,firing pin) Part Number: 11578915 (Bracket)