Belt feed mechanism for mil-spec linked ammo

摘要

A lower-receiver type feeding device for belted ammunition cartridges. A lead cartridge of the belt is separated from its lead link at a central stripping station. A rocker-type transfer mechanism sequentially moves cartridges with connected link toward the central stripping station. The transfer mechanism is driven through a cam interface with the bolt-carrier group. A sheering lip is disposed at the central stripping station to engage the lead link directly below the lead cartridge and resist stripping forces when the lead cartridge is pushed through a first outlet for chambering. A mag well post slides into a magazine well of the firearm. A bolt catch extension is pivotally carried on the right pivot shaft to remotely activate the bolt catch. An end-of-link stop is joined to the end of the ammunition belt. The end-of-link stop comprised a dummy cartridge having a longitudinally extending groove.

主权项

1. A feeding device for ammunition cartridges connected together in an elongated belt by separable links wherein the firearm individually separates a lead cartridge and a lead link from the remainder of the ammunition belt prior to chambering the lead cartridge in a breach, said device comprising:
a feed chute defining a transverse feed path configured to receive the ammunition belt with lead cartridge and connected lead link through an inlet, said feed chute including a central stripping station disposed along said transverse feed path, a first outlet for discharging the lead cartridge separated from the lead link, a second outlet for discharging the lead link separated from the lead cartridge, a transfer mechanism operatively associated with said feed chute for sequentially moving the lead cartridge and connected lead link into the central stripping station, a sheering lip disposed in said stripping station, said sheering lip configured to engage a portion of the lead link directly below the lead cartridge to resist separating forces when the lead cartridge is pushed through said first outlet with minimal induced torsional stress, and a de-linking arm extending from said sheering lip, said de-linking arm moveably disposed together with said sheering lip in said feed chute between stripping and non-stripping stations.