Replacement rail for your Swordfish system if you want to make your rail longer or shorter.
Rail comes with 2 or 3 sets of amounting lugs depending on the model
Rail Length: 9in, 10in, 11in, 12in, 13in, 14in, 15in, 16in, 17in, 18in, 19in, 20in
Material: Machine aircraft aluminum
To select the length of the rail, measure your handguard and the top rail of your gun, get the rail closet to the total length of your total measurement.