Installing a Magazine extension on a 870, 1100 Special Field, or 1187 Shotgun
This guide details the process of installing a magazine extension on Remington 870, 1100 Special Field, and 1187 shotguns, as demonstrated by Wes Doss, Brownells Training Group Leader. It covers crucial steps like addressing internal magazine tube crimps using specialized tools and ensuring proper spring length for reliable feeding. The instruction emphasizes safety throughout the modification process.











