RQRD FOR VISUAL INSPECTION OF BREECH EROSION IN BRU-46/A AND BRU-47/A BOMB RACK UNITS;BREECH GUIDE PIN MATES TO INSPECTION GAGE;INTERFACE AREA INSPECTED BETWEEN LOWER EDGES OF INSPECTION GAGE AND BREECH WALLS;MATL CORROSION RESISTANT STEEL;PASSIVATE FINISH;APPROX DIM 1 IN. WD BY 1 IN. LG BY 2 IN. HT;WT 3 0Z;SERD NO. 5087;HANDLE ALLOWS INSPECTION GAGE TO BE INSERTED OR REMOVED FROM BREECH CAVITY AFTER CLEANING WALLS OF BREECH