Patent ID: 8266998

Claim:
A kit for modifying a firearm having a receiver, a primary charging handle extending outwardly from only one side of the receiver and a bolt carrier in the receiver, said kit comprising: a modified receiver cover having a crown and a left and right retaining fin integral with a bottom of said crown for engaging the top of the receiver of the firearm, the left retaining fin having an elongated slot extending longitudinally along the left retaining fin on the left side of receiver cover; one single guide track having one single slot affixed to the left retaining fin aligned with the one single receiver cover slot, said guide track having a pair of retaining flanges being disposed on opposite sides of said slot; an auxiliary charging handle assembly secured within the guide track, the auxiliary charging handle assembly including a slide being slidably engaged to slide along the length of the guide track, an auxiliary charging handle and an engagement pin projecting inwardly from the slide and extending through said receiver cover slot to engage the bolt carrier positioned within the receiver of the firearm and move the bolt carrier when the auxiliary charging handle is pulled rearwardly; and wherein the bolt carrier of the firearm includes a primary charging handle extending therefrom a direction generally opposite of the auxiliary charging handle and extending outwardly from the receiver cover beneath the retaining fin not having the one single receiver cover slot.