Improves FeedingNeon Green for Visual Reference of Empty Magazine TubeFully MachinedFits Remington M870 | 1100 | 1187 - 12 GaugeNOTE: Custom aftermarket parts that have been installed marred, sanded ,shaved, scratched,installed incorrectly or correctly, wedo not accept returns on these items unless items are in new unused condition.Please contact a qualified gun smith for correct installation. Or feel free to contact the manufacturer  to see if the item is covered under the manufacturers warranty.Given the nature of custom fit parts many manufacturers will not warranty items that have been altered and where installation error may have created the problem.