Nordic 20ga Extension Tube Spring 40", replacement spring Out of stock. Check back later... $14.99 MSRP Price: $13.49 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info Replacement spring for shotgun magazine extensions. Extra Length to Allow Fitting Includes Instructions for Determining Length and Cutting Fits 12 Gauge UPC: 816696021188Manufacturer: Nordic ComponentsModel: EXT-SP-20-40Caliber: 20 gaCategory: PartsOtherMisc Shotgun PartsStock: 0Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.