The GrovTec US Mtmx3 is an extended magazine tube mount which is made specifically for the Remington 870 pump-action shotgun. It gives users 3 different methods for mounting their shotgun accessories, such as a sling. The components which come with this product include a Picatinny rail, swivel stud and push button base. The mount is compatible with the factory 12-gauge extended magazine tube of the Remington 870 and provides it with additional security. Not compatible with other magazine extensions like Nordic Components.
Shotgun slings are useful when you want to carry around a shotgun without having to hold onto it. The sling acts like a loop on the bottom of the shotgun and you just throw the loop over your shoulder to carry the shotgun around. This comes in particularly handy when you are out hunting or are getting ready to shoot something at any given moment. But in addition to carrying it around, slings also offer support when shooting the shotgun. You might not need this support with birdshot ammunition, but if you are using slugs then it will be very helpful in getting off a good shot.