Michael's Fat Boy Gettysburg Guns 1863 - Union Naval BrassFire off Michaels Fatboy Gettysburg Collection! Each BP Gel pen barrel is machined from solid naval brass bars into the shape of an 1850s handgun barrel used during the civil war and are very heavy like the guns themselves. This brass edition is dated July 2, 1863, to commemorate the second day of the battle. Each pen also features a new super strong clip system. Limited to 188 BP Gel pen barrels. Note: The brass barrels will naturally oxidize (change