First off, the Encore and Contender are two different firearms from Thompson Center Arms. The forends have nothing to do with which frame you have as long as they are for the Encore and not the Contender. The forend screws directly into the barrel with two screws, after the barrel is installed into the frame. The forend is designed to retain the pin that holds the barrel to the frame in place. Hope this helps, first check and make sure you have the right forend for you Encore.
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