Patent ID: 8117954

Claim:
A kit for modifying a firearm having a receiver and a bolt being positioned in the receiver, said kit comprising: a receiver cover for covering the receiver of the firearm, said receiver cover including: an arch-shaped crown having opposed sides; a pair of retaining fins being affixed to the bottom of said crown, each of said retaining fins including: an upper portion extending outwardly and downwardly from a respective one of said opposed sides of said crown; and, a lower portion extending downwardly from the bottom of one said upper portion for engaging the top of the receiver of the firearm; one of said retaining fins being provided with a slot and said slot extending along the length of one said upper portion; one of said retaining fins not having said slot; a guide track being affixed to said one of said retaining fins being provided with said slot, said guide track having a pair of retaining flanges being disposed on opposite sides of said slot; a charging handle assembly being secured to said guide track, said charging handle assembly including: a slide being slidably engaged with said retaining flanges and being adapted to move along the length of said guide track; an auxiliary charging handle being affixed to, and projecting outwardly from, said slide; and, an engagement pin being affixed to, and projecting inwardly from, said slide, said engagement pin extending through said slot; and, a bolt carrier being positioned within the receiver of the firearm beneath said receiver cover, said bolt carrier including: a base block for slidably engaging said receiver, said base block having a longitudinal bore in the bottom thereof for carrying the bolt, and said base block being in selective engagement with said engagement pin; an elongated, tubular sleeve being affixed atop said base block; a slotted guideway being disposed forwardly of said longitudinal bore and beneath said sleeve; and, a primary charging handle being affixed to said guideway and extending therefrom in a direction being generally opposite of that of said auxiliary charging handle and outwardly from said receiver cover beneath said retaining fin not having said slot.