| 摘要 |
The present invention is a shotgun undercarriage (10), for use in conjunctio n with a top receiver, barrel, fire control, carrier assembly, magazine assembly, and action system. The undercarriage (10) has an integral and unitary stock (14), bottom receiver (16) and forearm (18). The stock (14) is adaptable for housing an action spring; the bottom receiver (16) has at least one opening for mounting the fire control, the carrier assembly and the top receiver; and the forearm has a magazine housing. The bottom receiver (16) and forearm (18) cooperate to form at least one mounting surface capable of receiving the barrel and the top receiver.
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