Patent ID: 11859931
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An apparatus that fires ammunition of different sizes, the apparatus comprising:
a receiver portion that includes:
a back end configured to receive a first firearm cartridge of a first length or a second firearm cartridge of a second length,
a front end,
a hole that extends from the back end of the receiver portion to the front end of the receiver portion, wherein the first firearm cartridge of the first length or the second firearm cartridge of the second length are received in the hole at the back end of the receiver portion, and
a first type retention features of a first shape; and

a bolt portion comprising:
a second type of retention features that have a second shape that engages with the first shape of the first type of retention features, wherein:
a first sub-set of the first type of retention features engage with a first sub-set of the second type of retention features when the first sub-set of sub-set of the first type of retention features and the first sub-set of the second type of retention features are aligned and when the firearm cartridge of the first length is arranged to be fired from the back end of the receiver portion, and
a second sub-set of the first type of retention features engage with a second sub-set of the second type of retention features when the second sub-set of sub-set of the first type of retention features and the second sub-set of the second type of retention features are aligned and when the firearm cartridge of the second length is arranged to be fired from the back end of the receiver portion.