.177. 22 Caliber Gun Cleaning Kit with 6 Rods 5.56mm. 22. 223. 17 Rifle Pistol Airgun Cleaning Kits with Nylon Bore Brushes in Organizer Case for Hunting and Shooting. 【Flexible Length for. 17 &. 22 Caliber Firearms】The universal gun cleaning kit includes 6 brass rods.