Symbol of Carl's Rifle

Of all the guns that appear and/or are used throughout the narrative, Carl's rifle is perhaps the most significant. For Larry, when Carl gives him permission to borrow it, it represents at least a glimpse of affection and respect from his dad - while his dad's violent reaction when he learns that Larry had loaned it out represents a betrayal / ending of even that glimpse. For Silas, both when he borrows it initially and later cleans it in time for Larry's return home, it represents friendship.