If you have a short 18" barrel or a really long barrel like a 28" and want something in between, this is an excellent alternative. Normally barrels go for $200 - $280.
https://www.opticsplanet.com/mossbe...ossy-oak-new-break-up-fiber-optic-barrel.html
https://www.opticsplanet.com/mossbe...ossy-oak-new-break-up-fiber-optic-barrel.html