UPPER 

 SUB 



'0" RING 

 SEAL 



MULTIPLE 



SHOT 



BARREL 



INSTRUMENT 

 WEDGE 



"O" RING 

 SEAL 



>^. J TAPEREO 



^^-^i"HOLE 



BOTTOM 

 SUB 



Figure 292. Dur- 

 aluminum mul- 

 tiple-shot barrel 

 (3^/4 -inch diame- 

 ter) for DX in- 

 strument. 



