The CCM 2k pump kit is super smooth with very rigid dual rods for a no twist pump stroke. The stainless steel main guide rod has been redesigned to eliminate the aluminum guide nut. A 3/16 hex has been milled into the end of the main guide rod for installation purposes. This kit has the NEW EZ GRIP pump handle. This newly designed pump handle feels great in your hand, has a non-slip grip and has enough clearance to fit the largest barrels. The main guide rod, short stabilizing rod and pump arm are made of hand polished stainless steel, not anodized aluminum. The other metal parts are made from anodized billet 6061 aluminum. This fits year 2000 and older autococker bodies. CCM products carry a LifeTime Workmanship Warranty. This warranty applies only to the original purchaser and is NON-TRANSFERABLE. This warranty does not apply to items that have been abused, misused, modified or repaired.