A fixed block in the mechanism of a breech loading gun into which the breechblock fits to seal the breech opening during firing.
Classification: Part and accessories of articles of headings 9301 to 9304, nesoi
NSN 5985-01-658-6017
NSN 5950-01-147-2109
NSN 6610-00-155-1334
NSN 2925-00-105-3907
NSN 5920-00-021-3697
NSN 6220-01-646-9997
NSN 5895-01-500-6659
NSN 4140-01-391-2061
NSN 6105-01-620-9398
NSN 5975-00-246-4906
NSN 5990-00-990-1711
NSN 6130-00-284-1629