Mar 24, 2026
A guidance tab is provided for separating a cartridge round at its base from an aft linkage bracket within an ammunition chain. The tab includes a plate, a pair of legs and a pair of feet, and is composed of polyamide-imide. The plate has an obverse surface for engaging the base of the cartridge round and a reverse surface for engaging the aft linkage bracket. The plate is oriented along a longitudinal direction of the ammunition train and a lateral direction orthogonal to an axial direction of the cartridge round. The pair of legs extends from flanking sides of the plate in the axial direction towards the aft linkage bracket. The pair of feet extend substantially parallel to the plate. Each foot extends from a respective leg of the pair of legs.
Jan 6, 2026
The techniques described herein relate to methods and apparatus for a multi-linkage mechanical system comprising: a four-bar linkage mechanism comprising: a first ground connected to other linkages via a first revolute grounded joint and a second revolute grounded joint; a first crank; a first coupler; and a first output; and a slider-crank mechanism comprising: a second ground connected to other linkages via the second revolute grounded joint and a prismatic joint; a second crank; a second coupler; and a second output, wherein the first output of the four-bar linkage mechanism is connected to and configured to drive the second crank of the slider-crank mechanism. The techniques described herein relate to methods and apparatus for a firearm comprising: a lever; a four-bar linkage mechanism; and a slider-crank mechanism, wherein the lever includes at least one linkage of the four-bar linkage mechanism.
