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Trying to determine which model of the Tri Rail I need for my 500. I have the 6 shot model with 18" barrel. I assume I'd need the short? — 1 Answer

by Seth, from NC, United States Asked on December 11, 2021

Name Ergo Grip Mossberg Tri Rail ShotGun Forends (5)
As Low As $57.99 Save Up to 26%
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Answered by Ethan, Gear Expert, from IL, United States, on February 14, 2022

To determine the correct size forend for your shotgun, measure your existing forend. If it measures at about 7.5" to 7 3/4" you would choose the standard or 6.625" model. If it measures at about 6 3/4" you have a short forend and would require the 5" model.

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