a 7.62X51 rifle, bulpup
grabcad
The semi-auto bullpup battle rifle is inspired by EM-2, but employs a rotating bolt mechanism instead of the EM2's unspecified method of operation. It also features a helical-type firing system, opposed to the EM2's striker fire design. By project end, the rifle will be select-fire and could potentially include 2-round burst options. However, the rotating bolt design is a disadvantage for bullpup rifles as it increases length by about 0.4 to 0.8 inches. This rifle utilizes long stroke gas operation and the trigger mechanism from the P13 project.
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