Remington 870 Magazine Tube Detent Swage Tool - 12 Gauge In the past, installing a magazine tube extension on one of the 870/1100/11-87 series of shotguns was as simple as removing the mag cap, prying up the magazine spring retainer and swapping out springs before screwing on the extension. With the... MSRP: Was: Now: $39.59 Choose Options
